Display card with automatic switching of basic input / output system

Abstract

A display card with automatic switching of the Basic Input / Output System (PIS) includes a circuit board, a processing chip, multiple PIS chips, a fan connector, and a switching circuit. The switching circuit is electrically connected to the fan connector and the multiple PIS chips. The processing chip, the fan connector, the multiple PIS chips, and the switching circuit are mounted on the circuit board. The switching circuit controls the conduction state between the multiple PIS chips and the processing chip based on the potential of the fan connector.

Description

Technical Field

[0001] This invention relates to a display card, and more particularly to a display card with basic input / output system switching functionality. Background Technology

[0002] In the field of computer technology, the Basic Input Output System (BIOS) is the first program to run when a graphics card starts up. It is responsible for the graphics card's self-test, basic system settings, and program preprocessing, among other things. In some cases, the same graphics card may need to switch between different BIOS modes depending on the different heat sinks it uses to meet varying performance requirements.

[0003] However, traditional basic input / output system switching methods require users to manually perform basic input / output system switching operations. This operation is prone to omissions or errors, which may further lead to the system failing to start properly or misconfiguring, threatening the stability and security of the device. Summary of the Invention

[0004] In view of the above, the present invention provides a display card with an automatic switching basic input / output system function.

[0005] A display card with automatic switching of the Basic Input / Output System (PIS) according to an embodiment of the present invention includes a circuit board, a processing chip, multiple PIS chips, a fan connector, and a switching circuit. The switching circuit is electrically connected to the fan connector and the multiple PIS chips. The processing chip, the fan connector, the multiple PIS chips, and the switching circuit are disposed on the circuit board. The switching circuit controls the conduction state between the multiple PIS chips and the processing chip based on the potential of the fan connector.

[0006] With the above structure, the display card with automatic switching of basic input / output system disclosed in this case can realize automatic switching of basic input / output system according to the potential control of the fan connection terminal, avoiding the risk of manual operation, thereby improving the user experience and the intelligence level of the computer system.

[0007] The foregoing description of the contents of this disclosure and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the present invention, and to provide a further explanation of the claims of the present invention. Attached Figure Description

[0008] Figure 1 This is a functional block diagram of a display card with automatic switching of basic input / output system function, drawn according to the first embodiment of the present invention.

[0009] Figure 2This is a functional block diagram of a display card with automatic switching of basic input / output system function, drawn according to the second embodiment of the present invention.

[0010] Figure 3 This is a circuit diagram of a switching circuit for a display card with an automatic switching basic input / output system function, illustrated according to a second embodiment of the present invention.

[0011] Figure 4 This is a functional block diagram of a display card with automatic switching of basic input / output system function, drawn according to the third embodiment of the present invention.

[0012] Figure 5 This is a circuit diagram of a switching circuit for a display card with an automatic switching basic input / output system function, illustrated according to a third embodiment of the present invention.

[0013] Figure 6 This is a functional block diagram of a display card with automatic switching of basic input / output system function, drawn according to the fourth embodiment of the present invention.

[0014] The reference numerals in the attached figures are explained as follows:

[0015] 1A, 1B, 1C, ID: Display Card

[0016] 10: Circuit board

[0017] 11: Fan connection terminal

[0018] 11a, 11b: Connection ends

[0019] 12: Switching circuit

[0020] 12a, 12b, 12c, 12d: Voltage receiving terminals

[0021] 121, 122, 123, 124, 125: Switching elements

[0022] 121a, 122a, 123a, 124a, 125a: Control terminals

[0023] 121b, 122b, 123b, 124b, 125b: First end

[0024] 121c, 122c, 123c, 124c, 125c: Second end

[0025] 13: Basic Input / Output System Chip

[0026] 131: The First Chip

[0027] 132: Second chip

[0028] 14: Processing chips

[0029] 15: General-purpose input / output terminals

[0030] 16: Fan

[0031] 16a, 16b: Connection ends

[0032] R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13: Resistors

[0033] T1, T2, T3, T4, T5, T6, T7, T8: terminal Detailed Implementation

[0034] The following detailed description of the features and advantages of the present invention in the embodiments is sufficient to enable anyone skilled in the art to understand the technical content of the present invention and implement it accordingly. Furthermore, based on the disclosure, claims, and drawings in this specification, anyone skilled in the art can easily understand the related objectives and advantages of the present invention. The following embodiments are intended to further illustrate the points of the present invention, but are not intended to limit the scope of the present invention in any way.

[0035] The graphics card described below with automatic switching of the basic input / output system is suitable for connection to a heat sink or fan.

[0036] Please refer to Figure 1 , Figure 1 This is a functional block diagram of a display card with automatic switching of the basic input / output system according to an embodiment of the present invention. Figure 1 As shown, the display card 1A with automatic switching of the Basic Input / Output System (PIS) includes a circuit board 10, a fan connector 11, a switching circuit 12, multiple PIS chips 13, and a processing chip 14. The fan connector 11, the switching circuit 12, the multiple PIS chips 13, and the processing chip 14 are disposed on the circuit board 10, and the switching circuit 12 is electrically connected to the fan connector 11, the multiple PIS chips 13, and the processing chip 14.

[0037] Fan connector 11 corresponds to a connection terminal of a cooling fan and is used for electrical connection to the cooling fan. One of the fan connector 11 and the connection terminal of the cooling fan can be a socket, and the other can be a pin. For example, the cooling fan can have two pins, and the fan connector 11 has two sockets corresponding to the two pins. One of the two sockets can be connected to a fixed voltage as a voltage input pin, and the other can be used as a detection pin. When the cooling fan pin is inserted into the fan connector 11, it functions as a jumper, acting as a signal switch. When the cooling fan is electrically connected to the fan connector 11, the detection pin of the fan connector 11 has a fixed potential; when the cooling fan is not electrically connected to the fan connector 11, the detection pin of the fan connector 11 has a floating potential.

[0038] The switching circuit 12 controls the conduction state between multiple basic input / output system chips 13 and the processing chip 14 based on the potential of the fan connection terminal 11. For example, the switching circuit 12 may include one or more voltage receivers and multiple switching elements. The voltage receivers are used to receive external voltage signals and are electrically connected to the voltage input pin of the fan connection terminal 11, and the multiple switching elements are electrically connected to the detection pin of the fan connection terminal 11 to switch according to the potential of the fan connection terminal 11, enabling one of the basic input / output system chips 13 to conduct with the processing chip 14. The switching elements may be metal-oxide-semiconductor (MOS) transistors, switching chips, and transistor-to-transistor (TTL) logic circuits. The external voltage signal may be a fixed voltage, such as 1.8 volts or other operating voltages, or 0 volts (ground).

[0039] Multiple BIOS chips 13 can be used for system detection, hardware parameter configuration, and reading BIOS data. In one embodiment, the multiple BIOS chips 13 may include a first chip and a second chip, and the processing speed of the BIOS of the first chip is higher than that of the BIOS of the second chip. When the potential of the fan connection terminal 11 indicates that the fan is connected (e.g., with a fixed potential), the switching circuit 12 connects the first chip and the processing chip 14; when the potential of the fan connection terminal 11 indicates that the fan is not connected (e.g., with a floating potential), the switching circuit 12 connects the second chip and the processing chip 14. For example, the first chip may be a Turbo BIOS chip, and the second chip may be a general BIOS chip.

[0040] The processing chip 14 can be detected and initialized by the basic input / output system. Through the switching circuit 12, when the fan connector 11 is electrically connected to the fan, the processing chip 14 is detected and initialized by the first chip; when the fan connector 11 is not electrically connected to the fan, the processing chip 14 is detected and initialized by the second chip. The processing chip 14 may include a graphics processing unit (GPU) or other processors with signal processing capabilities.

[0041] Please refer to Figure 2 , Figure 2 This is a functional block diagram of a display card with automatic switching of the basic input / output system according to a second embodiment of the present invention. Figure 2 As shown, the display card 1B with automatic switching of the Basic Input / Output System (PIS) includes a circuit board 10, a fan connector 11, a switching circuit 12, a first chip 131, a second chip 132, and a processing chip 14, wherein the fan connector 11, the switching circuit 12, the first chip 131, the second chip 132, and the processing chip 14 are disposed on the circuit board 10. The first chip 131 and the second chip 132 are each PIS chips. Furthermore, the processing speed of the PIS of the first chip 131 is higher than that of the PIS of the second chip 132. For example, the first chip 131 may be a turbo PIS chip. The processing chip 14 may include a graphics processing unit or other processor with signal processing capabilities.

[0042] The fan connection 11 may include a first connection 11a and a second connection 11b, wherein the first connection 11a serves as a voltage input pin, and the second connection 11b serves as a detection pin. The switching circuit 12 may include voltage receiving terminals 12a and 12b, a first switching element 121, a second switching element 122, and a third switching element 123. The voltage receiving terminal 12a is electrically connected to the first connection 11a of the fan connection 11 and is used to receive a fixed voltage, such as the operating voltage or ground. The first switching element 121 and the second switching element 122 are electrically connected to the second connection 11b of the fan connection 11. The second switching element 122 is electrically connected to the first chip 131, and the third switching element 123 is electrically connected to the first switching element 121 and the second chip 132. The second switching element 122 and the third switching element 123 are electrically connected to the processing chip 14, specifically to the chip select (CS) pin of the processing chip 14.

[0043] The first switching element 121 has a control terminal 121a, a first terminal 121b, and a second terminal 121c. The control terminal 121a is used to control the conduction state between the first terminal 121b and the second terminal 121c. The control terminal 121a of the first switching element 121 is electrically connected to the second connection terminal 11b of the fan connection terminal 11. The first terminal 121b of the first switching element 121 is used to receive a first fixed voltage from the voltage receiving terminal 12b, and the second terminal 121c of the first switching element 121 is used to receive a second fixed voltage. The first fixed voltage received by the voltage receiving terminal 12b may be the same as or different from the fixed voltage received by the voltage receiving terminal 12a, which is not limited in this invention. The second fixed voltage may be ground or operating voltage, and the second fixed voltage is different from the first fixed voltage. In one embodiment, the first fixed voltage is an operating voltage (e.g., 1.8 volts), and the second fixed voltage is ground (e.g., 0 volts). When the first fixed voltage is changed to ground, the second fixed voltage can be used to reverse the level to achieve the function, which is not limited in this respect.

[0044] The second switching element 122 has a control terminal 122a, a first terminal 122b, and a second terminal 122c, wherein the control terminal 122a is used to control the conduction state between the first terminal 122b and the second terminal 122c. The control terminal 122a of the second switching element 122 is electrically connected to the second connection terminal 11b of the fan connection terminal 11, the first terminal 122b of the second switching element 122 is electrically connected to the first chip 131, and the second terminal 122c of the second switching element 122 is electrically connected to the processing chip 14. The third switching element 123 has a control terminal 123a, a first terminal 123b, and a second terminal 123c, wherein the control terminal 123a is used to control the conduction state between the first terminal 123b and the second terminal 123c. The control terminal 123a of the third switching element 123 is electrically connected to the first terminal 121b of the first switching element 121, the first terminal 123b of the third switching element 123 is electrically connected to the second chip 132, and the second terminal 123c of the third switching element 123 is electrically connected to the processing chip 14.

[0045] In this embodiment, when the second connection terminal 11b has a fixed potential, the second switching element 122 connects the first chip 131 and the processing chip 14. The first switching element 121 is on, causing the third switching element 123 to de-conduct, thereby preventing the second chip 132 and the processing chip 14 from conducting. When the second connection terminal 11b has a floating potential, the first switching element 121 is off, causing the third switching element 123 to conduct, thereby connecting the second chip 132 and the processing chip 14. The second switching element 122 then does not connect the first chip 131 and the processing chip 14. In this embodiment, the floating potential is lower than the on-state potential of the first switching element 121 and the on-state potential of the third switching element 123.

[0046] Please refer to Figure 3 , Figure 3 This is a circuit diagram illustrating the switching circuit of a display card with automatic switching of the basic input / output system according to a second embodiment of the present invention. Figure 3 As shown, fan connection terminal 11 is connected to a switching circuit. The switching circuit includes resistors R1 to R7, a first switching element 121, a second switching element 122, a third switching element 123, and voltage receiving terminals 12a to 12c. The first switching element 121, the second switching element 122, and the third switching element 123 are exemplary transistors. Voltage receiving terminal 12c is used to receive a fixed voltage, such as the operating voltage or ground. The fixed voltage received by voltage receiving terminal 12c may be the same as or different from the fixed voltage received by voltage receiving terminals 12a and 12b; this invention is not limiting. The switching circuit can be connected to a first chip (such as...) via a first terminal T1. Figure 2 The first chip 131 shown is connected to the second chip (e.g., via the third terminal T3) through the third terminal T3. Figure 2 The second chip 132 shown, and connected to the processing chip (such as) via the second terminal T2 and the fourth terminal T4. Figure 2 The processing chip 14 shown is particularly illustrated by its chip select pin. When the fan connection 11 is not connected to a fan, the first switching element 121 and the second switching element 122 in the switching circuit are in the off state. The voltage receiving terminal 12b transmits a signal to the third switching element 123, turning on the second chip connection terminal T3 and the processing chip connection terminal T4, and the system starts using the second chip. When the fan connection 11 is connected to a fan, the voltage at the control terminals of the first switching element 121 and the second switching element 122 becomes high. The first switching element 121 turns on the voltage receiving terminal 12b to ground to turn off the third switching element 123. The second switching element 122 turns on the first chip connection terminal T1 and the processing chip connection terminal T2, and the system switches to the first chip startup.

[0047] Please refer to Figure 4 , Figure 4 This is a functional block diagram of a display card with automatic switching of the basic input / output system according to a third embodiment of the present invention. Figure 4As shown, the display card 1C with automatic switching of the Basic Input / Output System (PIS) includes a circuit board 10, a fan connector 11, a switching circuit 12, a first chip 131, a second chip 132, a processing chip 14, and a general-purpose input / output terminal 15. The fan connector 11, switching circuit 12, first chip 131, second chip 132, processing chip 14, and general-purpose input / output terminal 15 are disposed on the circuit board 10. The first chip 131 and the second chip 132 are each PIS chips, and the second chip 132 may include a first sub-chip 1321 and a second sub-chip 1322. Furthermore, the processing speed of the PIS of the first chip 131 is higher than the processing speed of the PIS of the first sub-chip 1321 and the second sub-chip 1322 of the second chip 132. The processing speed of the PIS of the first sub-chip 1321 may be the same as or different from the processing speed of the PIS of the second sub-chip 1322. For example, the first chip 131 may be a turbo PIS chip. The processing chip 14 may include a graphics processing unit or other processor with signal processing capabilities. The general-purpose input / output terminals 15 can be used in a microcontroller unit (MCU) or system on a chip (SoC) to perform write or protection operations on the memory.

[0048] The switching circuit 12 may include a first switching element 121, a second switching element 122, a third switching element 123, a fourth switching element 124, and a fifth switching element 125, wherein the connection relationship and operation of the first switching element 121, the second switching element 122, and the third switching element 123 are as follows: Figure 3 As described in the embodiments, it will not be repeated here. It should also be noted that in other embodiments, either the fourth switching element 124 or the fifth switching element 125 may be selected.

[0049] The fourth switching element 124 has a control terminal 124a, a first terminal 124b, and a second terminal 124c, wherein the control terminal 124a is used to control the conduction state between the first terminal 124b and the second terminal 124c. The control terminal 124a of the fourth switching element 124 is connected to the second connection terminal 11b of the fan connection terminal 11, the first terminal 124b of the fourth switching element 124 is electrically connected to the first chip 131, and the second terminal 124c of the fourth switching element 124 is used to electrically connect to the general-purpose input / output terminal 15. The fifth switching element 125 has a control terminal 125a, a first terminal 125b, and a second terminal 125c, wherein the control terminal 125a is used to control the conduction state between the first terminal 125b and the second terminal 125c. The control terminal 125a of the fifth switching element 125 is electrically connected to the first terminal 121b of the first switching element 121. The first terminal 125b of the fifth switching element 125 is electrically connected to the second sub-chip 1322 of the second chip 132. The second terminal 125c of the fifth switching element 125 is electrically connected to the general-purpose input / output terminal 15. The fourth switching element 124 and the fifth switching element 125 are electrically connected to the general-purpose input / output terminal 15, and in particular, are electrically connected to the serial peripheral interface (SPI) pin of the general-purpose input / output terminal 15.

[0050] In this embodiment, when the second connection terminal 11b has a fixed potential, the second switching element 122 connects the first chip 131 and the processing chip 14, and the fourth switching element 124 connects the first chip 131 and the general-purpose input / output terminal 15. The first switching element 121 is turned on, so that the third switching element 123 and the fifth switching element 125 are not turned on, thereby making the first sub-chip 1321 of the second chip 132 not connected to the processing chip 14 and the second sub-chip 1322 not connected to the general-purpose input / output terminal 15. When the second connection terminal 11b has a floating potential, the first switching element 121 is not turned on, causing the third switching element 123 and the fifth switching element 125 to turn on. This, in turn, causes the first sub-chip 1321 of the second chip 132 to turn on with the processing chip 14, and the second sub-chip 1322 of the second chip 132 to turn on with the general-purpose input / output terminal 15. The second switching element 122 then does not turn on the first chip 131 and the processing chip 14, and the fourth switching element 124 does not turn on the first chip 131 and the general-purpose input / output terminal 15. In this embodiment, the floating potential is less than the on-state potential of the first switching element 121, the third switching element 123, and the fifth switching element 125.

[0051] Please refer to Figure 5 , Figure 5 This is a circuit diagram illustrating the switching circuit of a display card with automatic switching of the basic input / output system according to a third embodiment of the present invention. Figure 5As shown, fan connection terminal 11 is connected to a switching circuit, which includes resistors R1-R13, a first switching element 121, a second switching element 122, a third switching element 123, a fourth switching element 124, a fifth switching element 125, and voltage receiving terminals 12a-12d. The first switching element 121, second switching element 122, third switching element 123, fourth switching element 124, and fifth switching element 125 are exemplary transistors. Voltage receiving terminal 12d is used to receive a fixed voltage, such as the operating voltage or ground. The fixed voltage received by voltage receiving terminal 12d may be the same as or different from the fixed voltage received by voltage receiving terminals 12a, 12b, and 12c; this invention is not limiting. Fan connection terminal 11 can be connected to switching circuit 12 via two terminals. The first terminal 11a is connected to voltage receiving terminal 12a of switching circuit 12 via resistor R2 and can be used to receive a fixed voltage, such as 1.8 volts. The second terminal 11b of fan connection terminal 11 is used to transmit a fan connection signal. When the fan connection terminal 11 is not connected to a fan, the fan signal is in a floating state, and the fan signal transmitted to the transistor is low level. The first switching element 121, the second switching element 122, and the fourth switching element 124 in the switching circuit are all in the off state. The voltage receiving terminal 12b receives a fixed voltage, which flows through resistor R1, resistor R6, and resistor R11 and is converted into a second gate signal to the third switching element 123 and the fifth switching element 125 to turn on the third switching element 123 and the fifth switching element 125. The third switching element 123 conducts the first sub-chip connection terminal T3 and the processing chip connection terminal T4, and the fifth switching element 125 conducts the second sub-chip connection terminal T7 and the general-purpose input / output terminal connection terminal T8. At this time, it can be regarded as a normal state and a common basic input / output system chip can be used. When the fan is connected, the fan signal is transmitted to the first switching element 121. The first switching element 121 is in the on state, and conducts the voltage receiving terminal 12b to ground to turn off the third switching element 123 and the fifth switching element 125. The fan signal is converted into a first gate signal indicating voltage change via resistor R3 and sent to the second switching element 122 and the fourth switching element 124. The second switching element 122 is turned on to conduct the first chip connection terminal T1 and the processing chip connection terminal T2. The fifth switching element 125 is turned on to conduct the first chip connection terminal T5 and the general-purpose input / output terminal connection terminal T6, so as to achieve a basic input / output system automatic switching device based on fan interface identification.

[0052] Please refer to Figure 6 , Figure 6 This is a functional block diagram of a display card with automatic switching of the basic input / output system according to a fourth embodiment of the present invention. Figure 6As shown, the display card 1D with automatic switching of the Basic Input / Output System (PIS) includes a circuit board 10, a fan connector 11, a switching circuit 12, multiple PIS chips 13, a processing chip 14, and a fan 16. The implementation circuits / devices, functions, and connections of the circuit board 10, switching circuit 12, multiple PIS chips 13, and processing chip 14 are the same as those of the display cards 1A, 1B, or 1C shown in the previous embodiments, and will not be described again here. In this embodiment, the fan connector 11 includes a first connector 11a and a second connector 11b, and the fan 16 has a third connector 16a and a fourth connector 16b corresponding to the first connector 11a and the second connector 11b, respectively, wherein the third connector 16a and the fourth connector 16b are electrically connected to each other. In one embodiment, the third connector 16a and the fourth connector 16b of the fan 16 may be different from the endpoints to which the fan 16 is controlled to operate.

[0053] Fan 16 is connected to switching circuit 12 via fan connection terminal 11. The third connection terminal 16a of fan 16 is connected to the first connection terminal 11a, and the fourth connection terminal 16b of fan 16 is connected to the second connection terminal 11b, giving the second connection terminal 11b a fixed potential. Specifically, the first connection terminal 11a can be connected to 1.8 volts, other operating voltages, or ground. The first connection terminal 11a is connected to the third connection terminal 16a of fan 16. The second connection terminal 11b can serve as a detection pin. The fourth connection terminal 16b of fan 16 is connected to the second connection terminal 11b, causing a voltage change in the second connection terminal 11b, thereby allowing switching circuit 12 to switch between multiple basic input / output system chips 13.

[0054] With the above structure, the display card with automatic basic input / output system switching function disclosed in this case can automatically switch the corresponding basic input / output system mode according to the potential control of the fan connection terminal, without the need for manual confirmation of the basic input / output system, avoiding the risk of manual operation, thereby improving the user experience and the intelligence level of the computer system.

[0055] While the present invention has been disclosed above with reference to the foregoing embodiments, it is not intended to limit the invention. Any modifications and refinements made without departing from the spirit and scope of the invention are within the scope of patent protection of the present invention. Please refer to the appended claims for the defined scope of protection of the present invention.

Claims

1. A display card with automatic switching of basic input / output system function, characterized in that, Include: A circuit board; A processing chip is disposed on the circuit board; Multiple basic input / output system chips are mounted on this circuit board; A fan connector is located on this circuit board; as well as A switching circuit is disposed on the circuit board and electrically connected to the fan connection terminal and the plurality of basic input / output system chips, and is used to control the conduction state between the plurality of basic input / output system chips and the processing chip according to the potential of the fan connection terminal.

2. The display card with automatic switching of basic input / output system function as described in claim 1, characterized in that, The fan connection includes a first connection and a second connection, and the switching circuit includes a voltage receiver and a plurality of switching elements. The voltage receiver is electrically connected to the first connection and is used to receive a fixed voltage. The plurality of switching elements are electrically connected to the second connection, the plurality of basic input / output system chips and the processing chip.

3. The display card with automatic switching of basic input / output system function as described in claim 2, characterized in that, The plurality of basic input / output system chips include a first chip and a second chip. When the second connection terminal has a fixed potential, the plurality of switching elements connect the first chip and the processing chip. When the second connection terminal has a floating potential, the plurality of switching elements connect the second chip and the processing chip. The processing speed of the basic input / output system of the first chip is higher than the processing speed of the basic input / output system of the second chip.

4. The display card with automatic switching of basic input / output system function as described in claim 3, characterized in that, The first chip is a turbine basic input / output system chip.

5. The display card with automatic switching of basic input / output system function as described in claim 2, characterized in that, The plurality of basic input / output system chips includes a first chip and a second chip, and the plurality of switching elements includes: A first switching element, wherein a first end of the first switching element is used to receive a first fixed voltage, a second end of the first switching element is used to receive a second fixed voltage, and a control end of the first switching element is electrically connected to the second connection end of the fan connection end; A second switching element, wherein the first end of the second switching element is electrically connected to the first chip, the second end of the second switching element is electrically connected to the processing chip, and the control end of the second switching element is electrically connected to the second connection end of the fan connection end; as well as A third switching element, wherein the first end of the third switching element is electrically connected to the second chip, the second end of the third switching element is electrically connected to the processing chip, and the control end of the third switching element is electrically connected to the first end of the first switching element.

6. The display card with automatic switching of basic input / output system function as described in claim 5, characterized in that, The plurality of switching elements further includes a fourth switching element, the first end of which is electrically connected to the first chip, the second end of which is electrically connected to a general-purpose input / output terminal, and the control terminal of which is electrically connected to the second connection terminal of the fan connection terminal.

7. The display card with automatic switching of basic input / output system function as described in claim 5, characterized in that, The second chip includes a first sub-chip and a second sub-chip. The first terminal of the third switching element is electrically connected to the first sub-chip. The plurality of switching elements further includes a fifth switching element. The first terminal of the fifth switching element is electrically connected to the second sub-chip. The second terminal of the fifth switching element is used to be electrically connected to a general-purpose input / output terminal. The control terminal of the fifth switching element is electrically connected to the first terminal of the first switching element.

8. The display card with automatic switching of basic input / output system function as described in claim 1, characterized in that, The plurality of basic input / output system chips include a first chip and a second chip. When the potential at the fan connection terminal indicates that the fan is connected, the switching circuit connects the first chip and the processing chip. When the potential at the fan connection terminal indicates that the fan is not connected, the switching circuit connects the second chip and the processing chip. The processing speed of the basic input / output system of the first chip is higher than the processing speed of the basic input / output system of the second chip.

9. The display card with automatic switching of basic input / output system function as described in claim 8, characterized in that, The first chip is a turbine basic input / output system chip.

10. The display card with automatic switching of basic input / output system function as described in claim 1, characterized in that, The fan connector includes a first connector and a second connector, and the graphics card further includes: A fan has a third connection terminal and a fourth connection terminal corresponding to the first connection terminal and the second connection terminal, respectively. The third connection terminal and the fourth connection terminal are electrically connected to each other, and the third connection terminal and the fourth connection terminal are connected to the first connection terminal and the second connection terminal so that the second connection terminal has a fixed potential.

Images