Expansion card, mainboard and computer
By designing an expansion card for Nano-ITX motherboard, the function loss caused by excessive motherboard area and functional interfaces is solved, and effective expansion and convenient switching of functional interfaces are achieved.
Patent Information
- Application Number
- CN202420043650.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-01-04
AI Technical Summary
Nano-ITX motherboard or other specification motherboards have too many area and functional interfaces, resulting in some functional interfaces being unable to be designed on the motherboard, causing functional losses.
Design an expansion card, including a signal receiving interface, an expansion card function module and multiple expansion card function interfaces, receive the signal output from the Nano-ITX motherboard through the signal receiving module, and transmit the signal to the expansion card function module, and output according to the signal type. Function signal to the expansion card function interface, used to connect external functional devices.
The required functional interface is exported from the Nano-ITX motherboard through the expansion card, which avoids the problem of the functional interface being unusable due to the motherboard area design, and provides convenient functional interface switching.
Smart Images
Figure CN222461972U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of industrial mainboards, in particular to an expansion card, a mainboard and a computer. Background Art
[0002] At present, Nano-ITX motherboards or motherboards of some other specifications cannot have some functional interfaces designed on the motherboard due to their large motherboard area, too many functional interfaces, and overly dense motherboard design, which will cause loss of motherboard functionality.
[0003] The above contents are only used to assist in understanding the technical solution of the present utility model and do not constitute an admission that the above contents are prior art. Utility Model Content
[0004] The main purpose of the utility model is to provide an expansion card, a motherboard and a computer, aiming to solve the technical problem in the prior art that the current Nano-ITX motherboard or motherboards of other specifications cannot be designed on the motherboard due to the motherboard area, too many functional interfaces and the over-dense design of the motherboard, which will cause the loss of motherboard functions.
[0005] To achieve the above object, the utility model proposes an expansion card, which is applied to a Nano-ITX motherboard, and comprises: a signal receiving interface, an expansion card function module and a plurality of expansion card function interfaces;
[0006] The signal receiving interface is respectively connected to the Nano-ITX mainboard and the expansion card function module, the expansion card function module is respectively connected to a plurality of the expansion card function interfaces, and the expansion card function interfaces are used to connect to external functional devices;
[0007] The signal receiving module is used to receive the signal output by the Nano-ITX motherboard and transmit the signal to the expansion card function module;
[0008] The expansion card function module is used to output a corresponding function signal to the expansion card function interface according to the type of the signal;
[0009] The expansion card function interface is used to output the function signal to the external function device.
[0010] Optionally, the expansion card function module includes: an Ethernet control chip;
[0011] The input end of the Ethernet control chip is connected to the Nano-ITX mainboard through the signal receiving interface, and the output end of the Ethernet control chip is connected to the expansion card function interface;
[0012] The Ethernet control chip is used to output network signals to the corresponding expansion card function interface;
[0013] The expansion card function interface includes: RJ45_3 network interface;
[0014] The RJ45_3 network interface is connected to the Ethernet control chip and the external functional device respectively;
[0015] The RJ45_3 network interface is used to transmit the network signal to the external functional device.
[0016] Optionally, the expansion card function module further includes: a network signal filtering chip;
[0017] Wherein, the network signal filter chip is connected to the Ethernet control chip and the expansion card function interface respectively;
[0018] The network signal filtering chip is used to filter the network signal output by the Ethernet control chip, and output the filtered network signal to the corresponding expansion card function interface.
[0019] Optionally, the expansion card function module includes: a serial communication RS232 transceiver;
[0020] The input end of the serial communication RS232 transceiver is connected to the Nano-ITX mainboard through the signal receiving interface, and the output end of the serial communication RS232 transceiver is connected to the expansion card function interface;
[0021] The serial communication RS232 transceiver is used to output serial communication signals to the corresponding expansion card function interface;
[0022] The expansion card function interface includes: a serial communication interface;
[0023] The serial communication interface is connected to the serial communication RS232 transceiver and the external functional device respectively;
[0024] The serial communication interface is used to transmit the serial communication signal to the external functional device.
[0025] Optionally, the expansion card function module includes: a serial communication RS485 transceiver and a serial communication RS422 transceiver;
[0026] The input ends of the serial communication RS485 transceiver and the serial communication RS422 transceiver are connected to the Nano-ITX mainboard through the signal receiving interface, and the output ends of the serial communication RS485 transceiver and the serial communication RS422 transceiver are connected to the expansion card function interface;
[0027] The serial communication RS485 transceiver and the serial communication RS422 transceiver are used to output serial communication signals to the corresponding expansion card function interface.
[0028] Optionally, the expansion card function module further includes: a function selector;
[0029] The function selector is connected to the serial communication transceiver and the expansion card function interface respectively;
[0030] The function selector is used to select different function modes and configurations in serial communication to meet specific communication requirements.
[0031] Optionally, the expansion card function module further includes: a unidirectional converter;
[0032] The unidirectional converter is respectively connected to the serial communication transceiver and the expansion card function interface;
[0033] The unidirectional converter is used to convert signals into AC signals in serial communication to meet specific communication requirements.
[0034] Optionally, the signal receiving interface consists of two 2*30Pin_1mm pins.
[0035] In addition, to achieve the above-mentioned purpose, the utility model also provides a mainboard, which includes the expansion card mentioned above.
[0036] In addition, to achieve the above object, the utility model also provides a computer, which includes the expansion card mentioned above.
[0037] The utility model proposes an expansion card, a mainboard and a computer. The expansion card is applied to a Nano-ITX mainboard, and the expansion card comprises: a signal receiving interface, an expansion card function module and a plurality of expansion card function interfaces; wherein the signal receiving interface is respectively connected to the Nano-ITX mainboard and the expansion card function module, the expansion card function module is respectively connected to a plurality of expansion card function interfaces, and the expansion card function interface is used to connect an external functional device; the signal receiving module is used to receive a signal output by the Nano-ITX mainboard and transmit the signal to the expansion card function module; the expansion card function module is used to output a corresponding function signal to the expansion card function interface according to the type of the signal; the expansion card function interface is used to output the function signal to the external functional device, so that the required function interface is exported from the Nano-ITX mainboard to the expansion card based on a smaller board area, so that some function interfaces of the mainboard will not be unusable due to area design, and at the same time, the required function interfaces can be conveniently switched. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0039] Figure 1 A schematic diagram of the structure of a first embodiment of an expansion card proposed in an embodiment of the utility model;
[0040] Figure 2 A circuit schematic diagram of the Ethernet control chip proposed in the embodiment of the utility model;
[0041] Figure 3 A circuit schematic diagram of a network signal filter chip proposed in an embodiment of the utility model;
[0042] Figure 4 A circuit schematic diagram of the RJ45_3 network interface proposed in the embodiment of the utility model;
[0043] Figure 5 A circuit diagram of a serial communication RS232 transceiver proposed in an embodiment of the utility model;
[0044] Figure 6 The circuit principle diagram of the serial communication RS485 transceiver and the serial communication RS422 transceiver proposed in the embodiment of the utility model;
[0045] Figure 7A circuit schematic diagram of a function selector proposed in an embodiment of the utility model;
[0046] Figure 8 A circuit diagram of a unidirectional converter proposed in an embodiment of the utility model;
[0047] Fig. 9 A circuit diagram of a serial communication interface proposed in an embodiment of the utility model;
[0048] Fig.10 A circuit schematic diagram of a PCIE signal receiving interface proposed in an embodiment of the utility model;
[0049] Fig.11 A circuit schematic diagram of a serial communication signal receiving interface proposed in an embodiment of the utility model;
[0050] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0051] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0052] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0053] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0054] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0055] Reference Figure 1 , Figure 1 A schematic diagram of the structure of a first embodiment of an expansion card proposed in an embodiment of the utility model;
[0056] based on Figure 1 , a first embodiment of an expansion card of the utility model is proposed.
[0057] In this embodiment, the expansion card is applied to the Nano-ITX motherboard, and the expansion card includes: a signal receiving interface, an expansion card function module, and a plurality of expansion card function interfaces;
[0058] The signal receiving interface is respectively connected to the Nano-ITX mainboard and the expansion card function module, the expansion card function module is respectively connected to a plurality of the expansion card function interfaces, and the expansion card function interfaces are used to connect to external functional devices;
[0059] The signal receiving module is used to receive the signal output by the Nano-ITX motherboard and transmit the signal to the expansion card function module;
[0060] The expansion card function module is used to output a corresponding function signal to the expansion card function interface according to the type of the signal;
[0061] The expansion card function interface is used to output the function signal to the external function device.
[0062] It should be noted that the signal receiving interface may include a digital interface (such as PCIe, USB, Ethernet, etc.) or an analog interface (such as VGA, HDMI, audio interface, etc.) for receiving signals from the Nano-ITX motherboard. The expansion card function module can be designed to implement various functions according to requirements, such as video processing, audio processing, network communication, etc. The specific functions depend on the user's needs and the design goals of the expansion card. The expansion card function interface usually refers to an external interface, which can be various standard interfaces such as USB, HDMI, audio jack, etc., which are used to connect external functional devices such as monitors, speakers, keyboards, mice, etc.
[0063] In the specific implementation, the signal receiving module receives the signal from the Nano-ITX motherboard and transmits it to the expansion card function module; the expansion card function module outputs the corresponding function signal to the expansion card function interface according to the signal type; finally, these function signals are output to the external function device, realizing the connection and communication between the Nano-ITX motherboard and the external function device. Such a design can effectively expand the functions of the Nano-ITX motherboard and provide users with more interfaces to connect external devices. This will be very useful for users who need a large number of external function device interfaces.
[0064] This embodiment proposes an expansion card, which is applied to a Nano-ITX motherboard. The expansion card includes: a signal receiving interface, an expansion card function module and a plurality of expansion card function interfaces; wherein the signal receiving interface is respectively connected to the Nano-ITX motherboard and the expansion card function module, the expansion card function module is respectively connected to the plurality of expansion card function interfaces, and the expansion card function interface is used to connect an external functional device; the signal receiving module is used to receive a signal output by the Nano-ITX motherboard and transmit the signal to the expansion card function module; the expansion card function module is used to output a corresponding function signal to the expansion card function interface according to the type of the signal; the expansion card function interface is used to output the function signal to the external functional device, so that the required function interface is exported from the Nano-ITX motherboard to the expansion card based on a smaller board area, so that some function interfaces of the motherboard will not be unusable due to area design, and at the same time, the required function interfaces can be conveniently switched.
[0065] Furthermore, the expansion card function module includes: an Ethernet control chip;
[0066] The input end of the Ethernet control chip is connected to the Nano-ITX mainboard through the signal receiving interface, and the output end of the Ethernet control chip is connected to the expansion card function interface;
[0067] The Ethernet control chip is used to output network signals to the corresponding expansion card function interface.
[0068] It should be noted that, refer to Figure 2 , Figure 2 It can be a circuit schematic diagram of an Ethernet control chip. The expansion card function module includes an Ethernet control chip, whose input end is connected to the Nano-ITX motherboard through a signal receiving interface, and whose output end is connected to the expansion card function interface. This design enables the Ethernet control chip to receive network signals from the motherboard and output them to the corresponding expansion card function interface, thereby realizing the connection and communication between the expansion card and the network device.
[0069] It should be understood that this expansion card function module can provide convenience for users in practical applications, especially for scenarios that require additional network interfaces, such as data transmission, network connection, etc. The introduction of Ethernet control chips adds network communication capabilities to the expansion card function module, providing users with more expansion and connection options.
[0070] Furthermore, the expansion card function module further includes: a network signal filtering chip;
[0071] Wherein, the network signal filter chip is connected to the Ethernet control chip and the expansion card function interface respectively;
[0072] The network signal filtering chip is used to filter the network signal output by the Ethernet control chip, and output the filtered network signal to the corresponding expansion card function interface.
[0073] It should be noted that, refer to Figure 3 , Figure 3 It can be a circuit schematic diagram of a network signal filter chip, and the expansion card function module also includes a network signal filter chip. This network signal filter chip is connected to the Ethernet control chip and the expansion card function interface, and its function is to filter the network signal from the Ethernet control chip and then output the filtered network signal to the corresponding expansion card function interface.
[0074] It should be understood that the introduction of network signal filter chips can effectively improve the quality and stability of network signals to adapt to different external network environments and device connection requirements. This design can ensure that the network signals processed in the expansion card function module meet specific standards and requirements, thereby improving the reliability and performance of the overall system.
[0075] Further, the expansion card function interface includes: RJ45_3 network interface;
[0076] The RJ45_3 network interface is connected to the Ethernet control chip and the external functional device respectively;
[0077] The RJ45_3 network interface is used to transmit the network signal to the external functional device.
[0078] It should be noted that, refer to Figure 4 , Figure 4 It can be a circuit schematic diagram of an RJ45_3 network interface. In this embodiment, multiple RJ45_3 network interfaces can be included. The RJ45_3 network interface can be used as an Ethernet connection interface, and it can be connected to other network devices (such as routers, switches, etc.) through an Ethernet cable. In this way, the network signal processed by the Ethernet control chip and the network signal filter chip on the expansion card can be transmitted to external functional devices, such as computers, servers, network cameras, etc.
[0079] It should be understood that the introduction of the RJ45_3 network interface effectively expands the network connection capabilities of the expansion card, enabling it to communicate and transmit data with external network devices. Users can choose to connect external functional devices according to actual needs to achieve more expansion and application scenarios.
[0080] Further, the expansion card function module includes: a serial communication RS232 transceiver;
[0081] The input end of the serial communication RS232 transceiver is connected to the Nano-ITX mainboard through the signal receiving interface, and the output end of the serial communication RS232 transceiver is connected to the expansion card function interface;
[0082] The serial communication RS232 transceiver is used to output serial communication signals to the corresponding expansion card function interface.
[0083] It should be noted that, refer to Figure 5 , Figure 5 It can be a circuit schematic diagram of a serial communication RS232 transceiver, and the expansion card function module also includes a serial communication RS232 transceiver. The design of the serial communication RS232 transceiver allows its input end to be connected to the Nano-ITX motherboard through a signal receiving interface, and the output end is connected to the expansion card function interface, so as to output the serial communication signal to the corresponding expansion card function interface.
[0084] It should be understood that by introducing the serial communication RS232 transceiver, the expansion card function module can realize serial communication transmission with external devices. RS232 is a common serial communication standard, which is widely used to connect various devices, such as printers, sensors, data acquisition equipment, etc. Therefore, the introduction of the serial communication RS232 transceiver adds the ability of data exchange and control with various external serial communication devices to the expansion card function module.
[0085] Further, the expansion card function module includes: a serial communication RS485 transceiver and a serial communication RS422 transceiver;
[0086] The input ends of the serial communication RS485 transceiver and the serial communication RS422 transceiver are connected to the Nano-ITX mainboard through the signal receiving interface, and the output ends of the serial communication RS485 transceiver and the serial communication RS422 transceiver are connected to the expansion card function interface;
[0087] The serial communication RS485 transceiver and the serial communication RS422 transceiver are used to output serial communication signals to the corresponding expansion card function interface.
[0088] It should be noted that, refer to Figure 6 , Figure 6It can be a circuit schematic diagram of a serial communication RS485 transceiver and a serial communication RS422 transceiver, and the expansion card function module also includes a serial communication RS485 transceiver and a serial communication RS422 transceiver. The input ends of the two transceivers are connected to the Nano-ITX motherboard through a signal receiving interface, and the output ends are connected to the expansion card function interface to output the corresponding serial communication signal to the expansion card function interface.
[0089] It should be understood that serial communication RS485 and RS422 are both common high-speed serial communication standards, commonly used for long-distance communication and data transmission in noisy environments. RS485 is a half-duplex communication protocol with differential signals, while RS422 is a full-duplex differential signal communication protocol. They are widely used in industrial automation, power systems, instrumentation and other fields.
[0090] It is understandable that by introducing the serial communication RS485 transceiver and the serial communication RS422 transceiver, the expansion card function module can communicate with external devices that support these two communication standards. In this way, users can use these interfaces to exchange data and control external serial devices, which is suitable for a wider range of application scenarios and needs.
[0091] Furthermore, the expansion card function module further includes: a function selector;
[0092] The function selector is connected to the serial communication transceiver and the expansion card function interface respectively;
[0093] The function selector is used to select different function modes and configurations in serial communication to meet specific communication requirements.
[0094] It should be noted that, refer to Figure 7 , Figure 7 It can be a circuit schematic diagram of a function selector, which plays the role of selecting different function modes and configurations in serial communication to meet specific communication requirements. It can switch different signals and function settings between the serial communication transceiver and the expansion card function interface according to the user's requirements or the characteristics of the external device.
[0095] It should be understood that by using the function selector, users can flexibly select the serial communication working mode and configuration according to specific scenarios and requirements to ensure stable and reliable communication with external devices. This design makes the expansion card function module more versatile and adaptable to different serial communication requirements.
[0096] Furthermore, the expansion card function module further includes: a unidirectional converter;
[0097] The unidirectional converter is respectively connected to the serial communication transceiver and the expansion card function interface;
[0098] The unidirectional converter is used to convert signals into AC signals in serial communication to meet specific communication requirements.
[0099] It should be noted that, refer to Figure 8 , Figure 8 It can be a circuit schematic diagram of a unidirectional converter. The role of a unidirectional converter in serial communication is to convert signals into AC signals to meet specific communication requirements. It can convert and adjust serial communication signals in a specific way to ensure reliable transmission of signals and corresponding adaptability.
[0100] It should be understood that by introducing a unidirectional converter, the expansion card function module can appropriately convert the signal in the serial communication to meet the requirements of a specific device or system for an AC signal. Such a design enables the expansion card function module to be compatible with more external devices and expands the scope and flexibility of application.
[0101] Further, the expansion card function interface includes: a serial communication interface;
[0102] The serial communication interface is connected to the serial communication RS232 transceiver and the external functional device respectively;
[0103] The serial communication interface is used to transmit the serial communication signal to the external functional device.
[0104] It should be noted that, refer to Fig. 9 , Fig. 9 It can be a circuit schematic diagram of a serial communication interface. The function of the serial communication interface is to transmit serial communication signals to external functional devices. It provides a data transmission channel so that the expansion card function module can communicate serially with external devices.
[0105] It should be understood that, through the serial communication interface, the expansion card function module can transmit the serial communication signal to the external functional device to realize data interaction and control. Such a design enables the expansion card function module to communicate with various serial devices through the serial communication interface, thereby meeting the serial communication requirements of different application scenarios and requirements.
[0106] Furthermore, the signal receiving interface consists of two 2*30Pin_1mm pins.
[0107] It should be noted that, refer to Fig.10 , Fig.10 It can be the circuit schematic diagram of the PCIE signal receiving interface; refer to Fig.11 , Fig.11It can be a circuit schematic diagram of a serial communication signal receiving interface. The signal receiving interface consists of two 2*30Pin_1mm pins, namely a PCIE signal receiving interface and a serial communication signal receiving interface. Fig.10 This is a circuit schematic diagram of a PCIE signal receiving interface based on the utility model. PCIE (Peripheral Component Interconnect Express) is a high-speed serial bus interface standard used to connect a computer's motherboard and expansion card. This circuit schematic diagram is designed to implement a PCIE signal receiving interface. Fig.11 This is a circuit schematic diagram of a serial communication signal receiving interface based on the utility model. This circuit schematic diagram is designed to realize a receiving interface of a serial communication signal. Serial communication is a communication method that transmits data bits one by one in a time sequence.
[0108] To achieve the above purpose, the utility model also proposes a motherboard, which includes the expansion card as described above. The specific structure of the expansion card refers to the above embodiment. Since the motherboard adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.
[0109] To achieve the above purpose, the utility model also provides a computer, the computer includes the expansion card as described above. The specific structure of the expansion card refers to the above embodiment. Since the computer adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.
[0110] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. An expansion card, characterized in that: The expansion card is applied to the Nano-ITX motherboard, and the expansion card includes: a signal receiving interface, an expansion card function module and a plurality of expansion card function interfaces; The signal receiving interface is respectively connected to the Nano-ITX mainboard and the expansion card function module, the expansion card function module is respectively connected to a plurality of the expansion card function interfaces, and the expansion card function interfaces are used to connect to external functional devices; The signal receiving interface is used to receive the signal output by the Nano-ITX motherboard and transmit the signal to the expansion card function module; The expansion card function module is used to output a corresponding function signal to the expansion card function interface according to the type of the signal; The expansion card function interface is used to output the function signal to the external function device.
2. The expansion card as claimed in claim 1, characterized in that: The expansion card function module includes: an Ethernet control chip; The input end of the Ethernet control chip is connected to the Nano-ITX mainboard through the signal receiving interface, and the output end of the Ethernet control chip is connected to the expansion card function interface; The Ethernet control chip is used to output network signals to the corresponding expansion card function interface; The expansion card function interface includes: RJ45_3 network interface; The RJ45_3 network interface is connected to the Ethernet control chip and the external functional device respectively; The RJ45_3 network interface is used to transmit the network signal to the external functional device.
3. The expansion card as claimed in claim 2, characterized in that: The expansion card function module also includes: a network signal filtering chip; Wherein, the network signal filter chip is connected to the Ethernet control chip and the expansion card function interface respectively; The network signal filtering chip is used to filter the network signal output by the Ethernet control chip, and output the filtered network signal to the corresponding expansion card function interface.
4. The expansion card as claimed in claim 1, characterized in that: The expansion card function module includes: a serial communication RS232 transceiver; The input end of the serial communication RS232 transceiver is connected to the Nano-ITX mainboard through the signal receiving interface, and the output end of the serial communication RS232 transceiver is connected to the expansion card function interface; The serial communication RS232 transceiver is used to output serial communication signals to the corresponding expansion card function interface; The expansion card function interface includes: a serial communication interface; The serial communication interface is connected to the serial communication RS232 transceiver and the external functional device respectively; The serial communication interface is used to transmit the serial communication signal to the external functional device.
5. The expansion card as claimed in claim 1, wherein: The expansion card function module includes: a serial communication RS485 transceiver and a serial communication RS422 transceiver; The input ends of the serial communication RS485 transceiver and the serial communication RS422 transceiver are connected to the Nano-ITX mainboard through the signal receiving interface, and the output ends of the serial communication RS485 transceiver and the serial communication RS422 transceiver are connected to the expansion card function interface; The serial communication RS485 transceiver and the serial communication RS422 transceiver are used to output serial communication signals to the corresponding expansion card function interface.
6. The expansion card according to claim 4 or 5, characterized in that: The expansion card function module also includes: a function selector; The function selector is connected to the serial communication transceiver and the expansion card function interface respectively; The function selector is used to select different function modes and configurations in serial communication to meet specific communication requirements.
7. The expansion card according to claim 4 or 5, characterized in that: The expansion card function module also includes: a unidirectional converter; The unidirectional converter is respectively connected to the serial communication transceiver and the expansion card function interface; The unidirectional converter is used to convert signals into AC signals in serial communication to meet specific communication requirements.
8. The expansion card as claimed in claim 1, wherein: The signal receiving interface consists of two 2*30Pin_1mm pins.
9. A motherboard, characterized in that: The main board includes the expansion card according to any one of claims 1 to 8.
10. A computer, characterized in that: The computer comprises the expansion card according to any one of claims 1 to 8.