A portable desk computer

Abstract

A portable desktop computer includes a mini-PC and a monitor. The mini-PC has a first direct-connect interface; the monitor has a second direct-connect interface. The first and second direct-connect interfaces can be directly plugged into each other to connect the mini-PC and the monitor, allowing the mini-PC to be directly mounted on the monitor to form an all-in-one form factor while retaining the performance advantages of a standalone PC. The direct-connect interface design eliminates the bulky interface panel and redundant internal wiring of traditional PCs, allowing the mini-PC to maintain high-performance hardware configuration while achieving a smaller size and improving desktop tidiness and portability. Furthermore, in terms of spatial layout, the mini-PC uses an innovative three-dimensional stacking structure. Through adapter technology, the discrete graphics card is positioned parallel to the motherboard, changing the traditional vertical layout limitation of graphics cards. This allows core components to be compactly stacked along the normal direction of the motherboard, significantly reducing the overall thickness and volume of the chassis, balancing performance and size.

Description

Technical Field

[0001] This invention relates to the field of computers, and more particularly to a portable desktop computer. Background Technology

[0002] With the popularization of computer technology and the diversification of application scenarios, laptops, all-in-ones, and traditional desktops have become the mainstream computer forms. Laptops and all-in-ones, limited by their compact design and limited internal space, typically integrate integrated graphics cards. Constrained by heat dissipation and hardware specifications, their graphics processing capabilities and overall performance are relatively limited, making it difficult to meet the demands of high-load computing and graphics rendering. While traditional desktops can be equipped with dedicated graphics cards, offering stronger computing performance and expandability, they suffer from bulky chassis, complex peripheral cables, and other drawbacks. They not only occupy a large amount of space and have an unsightly overall layout, but also suffer from inconvenience in portability and cumbersome installation. Existing computer forms struggle to balance performance, aesthetics, and portability, resulting in certain application limitations. Therefore, there is an urgent need in this field for a new computer form that can inherit the high performance and good heat dissipation characteristics of traditional desktops while eliminating cumbersome cables, enabling a simple and quick connection between the host and monitor, and improving overall portability. Summary of the Invention

[0003] The present invention aims to solve the above problems and provides a portable desktop computer with a significantly reduced size for easy carrying, and the host and the display can be directly connected without additional cables.

[0004] To address the above problems, the present invention provides a portable desktop computer, comprising:

[0005] Mini PC with a first plug-in interface;

[0006] The monitor is provided with a second direct-plug interface and a second wired-plug interface; the monitor can be connected to a mainstream host via a cable connected through the second wired-plug interface.

[0007] The first and second plug-in interfaces can be directly plugged into each other to connect the mini host and the monitor.

[0008] Furthermore, the mini-host can be connected to an external power source, and the mini-host can provide power to the display and transmit video signals through the connection of the first and second plug-in interfaces.

[0009] Furthermore, the display can be connected to an external power source, and the display can provide power to the mini host by connecting the first and second direct-connect interfaces. The mini host can input video signals to the display by connecting the first and second direct-connect interfaces.

[0010] Furthermore, the display also has an independent power interface for connecting to an external power source;

[0011] When the display is connected to an external power source, the display is powered by the external power source; the mini host transmits video signals to the display through the connection of the first and second direct-plug interfaces.

[0012] Furthermore, the second direct-plug interface is located on the back of the display; after the first direct-plug interface and the second direct-plug interface are plugged in, the mini host is fixed to the back of the display through the mechanical cooperation between the interfaces, so that the mini host and the display form an integrated form.

[0013] Furthermore, the mini PC includes a motherboard and a dedicated graphics card, with the dedicated graphics card positioned substantially parallel to the motherboard to reduce the size of the mini PC in the direction normal to the motherboard.

[0014] Furthermore, the mini-PC also includes a CPU, and the CPU and the discrete graphics card are located on opposite sides of the motherboard.

[0015] Furthermore, a vertical adjustment structure is provided between the first direct-plug interface and the mini host. The first direct-plug interface can change its vertical height relative to the mini host along the vertical adjustment structure so that the mini host is kept within a preset space range when the display is raised or lowered.

[0016] Furthermore, the first through-hole interface is installed on the discrete graphics card and electrically connected to it.

[0017] Furthermore, the chassis is also equipped with a water cooling system, which includes a first water block, a second water block, a first cooling pipe, a second cooling pipe, and a radiator. The first water block is connected to the CPU, and the second water block is connected to the graphics card. The first water block and the second water block are located on opposite sides of the motherboard. The first cooling pipe is connected to the first water block and the radiator at both ends. The second cooling pipe is connected to the second water block and the radiator at both ends. The radiator is fixed to the inner or outer wall of the mini PC.

[0018] The beneficial effects of this invention lie in its ability to effectively solve the problems existing in the prior art. The mini-PC and monitor of this invention can be directly plugged in and connected together, presenting a cleaner and more compact form. This invention provides a first and a second direct-plug interface on both the mini-PC and the monitor. When the first and second direct-plug interfaces are directly plugged in, either the mini-PC or the monitor can be connected to a power source simultaneously to complete power transmission and video signal transmission. No additional power cords, HDMI cables, DP cables, or other independent connecting cables are required; the plugging and unplugging process is completed in one step, making assembly and disassembly extremely simple. The overall appearance is clean and free of redundant cables, making it more convenient to use and store. Simultaneously, this invention optimizes the internal layout of the PC, placing the discrete graphics card and CPU on opposite sides of the motherboard, with the discrete graphics card positioned approximately parallel to the motherboard, significantly reducing the overall size of the PC and achieving a miniaturized and lightweight design. Therefore, this invention, while ensuring overall system performance with a discrete graphics card, also boasts the advantages of small size and lightweight design, making it easy for users to carry, move, and install. It combines high performance and portability, making it applicable to a wider range of scenarios. Attached Figure Description

[0019] Figure 1 Diagram showing how to connect a mini PC to a power source.

[0020] Figure 2 Diagram showing the monitor connected to a power source.

[0021] Figure 3 Diagram showing the mini PC and monitor connected to a power source.

[0022] Figure 4 Diagram showing how to connect a mini PC and a monitor using a video cable.

[0023] (The dashed lines in the diagram represent direct plug-in connections)

[0024] Illustration: Mini PC 10, First Direct Plug Interface 11, First Cable Plug Interface 12, Monitor 20, Second Direct Plug Interface 21, Second Cable Plug Interface 22, Power Interface 23, First Judgment Module 24, Power Supply 30. Detailed Implementation

[0025] The following embodiments are further explanations and supplements to the present invention and do not constitute any limitation on the present invention.

[0026] like Figures 1-4 As shown, a portable desktop computer includes: a mini host 10, which has a first direct-connect interface 11; and a monitor 20, which has a second direct-connect interface 21 and a second cable interface 22.

[0027] The display 20 can be connected to a mainstream host via a cable connected to the second cable connector 22. The second cable connector 22 can be a DP interface, HDMI interface, etc., and there must be at least one second cable connector 22; the specific number is not limited. The display 20 can receive video signals from other devices via the second cable connector 22. The presence of the second cable connector 22 expands the applicability and reliability of the display 20, allowing it to be used not only to connect to the mini host 10 but also as a general-purpose display to connect to laptops, etc.

[0028] Furthermore, the first direct-plug interface 11 and the second direct-plug interface 21 can be directly plugged in without cables. When the mini host 10 and the display 20 are connected through the first direct-plug interface 11 and the second direct-plug interface 21, not only can the mini host 10 and the display 20 transmit power, but the mini host 10 can also transmit video signals to the display 20.

[0029] More specifically, when the mini-host 10 and the display 20 are connected via the first direct-plug interface 11 and the second direct-plug interface 21, they can transmit only electrical power, only video signals, or both simultaneously. When the first direct-plug interface 11 and the second direct-plug interface 21 are connected, the mini-host 10 and the display 20 can communicate.

[0030] When either the display 20 or the mini-PC 10 is connected to an external power source 30, the one connected to the power source 30 can provide power to the other through the connection between the first direct-plug interface 11 and the second direct-plug interface 21. That is, when either the display 20 or the mini-PC 10 is connected to the power source 30, the power required by the one not connected to the external power source 30 is transmitted by the one connected to the power source 30 through the first direct-plug interface 11 and the second direct-plug interface 21.

[0031] In summary, when the first direct-plug interface 11 and the second direct-plug interface 21 are connected, the mini host 10 and the display 20 can transmit electrical energy and the mini host 10 can transmit video signals to the display 20.

[0032] To achieve the above functions, both the first through-hole interface 11 and the second through-hole interface 21 adopt a full-featured USB Type-C interface that supports DisplayPort Alt Mode and PD (USB Power Delivery) protocols, or a Thunderbolt 3 / 4 interface that supports Thunderbolt 3 / 4. Of course, the protocols used by the first through-hole interface 11 and the second through-hole interface 21 are not limited to these, as long as the aforementioned functions can be achieved.

[0033] One of the first direct-connect interface 11 and the second direct-connect interface 21 is a plug interface, and the other is a socket interface. Their specific shapes are not limited, and they cooperate with each other. The plug interface is inserted into the socket interface to achieve the connection between the first direct-connect interface 11 and the second direct-connect interface 21. Preferably, both the first direct-connect interface 11 and the second direct-connect interface 21 adopt Thunderbolt 4 interfaces, with the first direct-connect interface 11 being a plug interface and the second direct-connect interface 21 being a socket interface. The display 20 has a screen, and both the second direct-connect interface 21 and the second cable interface 22 are located on the back side facing away from the display 20.

[0034] Furthermore, as an extension, the mini-host 10 is also equipped with a first cable connector 12, which is used to connect a video cable to transmit video signals. The first cable connector 12 can be a DP interface, HDMI interface, etc., and there is at least one first cable connector 12, with no specific limit on the number. Preferably, the number and interface type of the second cable connector 22 are the same as those of the first cable connector 12. The mini-host 10 can connect the first cable connector 12 and the second cable connector 22 via an external video cable to transmit video signals to the display 20. This allows users to conveniently place the mini-host 10 away from the display 20 in certain situations, without having to directly plug it into the display 20. Moreover, this also facilitates the connection of the mini-host 10 to other general-purpose displays. Even when necessary, users can directly plug the mini-host 10 into the display 20 and then connect it to other general-purpose displays via the first cable connector 12 to achieve the effect of using one host with multiple displays, making it convenient for users to expand their screen usage. The addition of a first cable connector 12 greatly expands the usability of the mini PC 10. It can be connected to the monitor 20 or other general-purpose monitors via cable, just like a mainstream PC, or it can be directly plugged into the monitor 20 for use. This allows it to support both single-screen and multi-screen displays.

[0035] In traditional desktop computer assembly and usage scenarios, the monitor 20 and mini-PC 10 often require separate power cables to connect to the power supply 30 to provide the necessary power for their operation. Additionally, a video cable is needed to connect the monitor 20 and mini-PC 10 for video signal transmission. The presence of these multiple external cables (power and video cables) significantly increases the workload of desktop computer assembly, cabling, and post-assembly cleanup, reducing assembly efficiency. Furthermore, the excessive number and cluttered cables can make the desktop and surrounding area around the monitor 20 appear messy, affecting both aesthetics and daily use and maintenance. This embodiment optimizes the connection structure between the mini-PC 10 and monitor 20: a first direct-connect interface 11 and a second direct-connect interface 21 are respectively provided on the mini-PC 10 and monitor 20, allowing for precise plug-in connection. The mini-PC 10 and monitor 20 can be connected and transmit power via the first direct-connect interface 11 and the second direct-connect interface 21. The mini-PC 10 can also transmit video signals to the monitor 20. Only one of the mini-PC 10 or monitor 20 needs to be connected to an external power supply 30 to operate the portable desktop computer. This structural design reduces the required power cables and eliminates the need for an additional dedicated video cable between the monitor 20 and mini-PC 10, effectively simplifying the overall connection structure and reducing the number of external cables. This improves the ease of assembly of the portable desktop computer and makes the layout around the monitor 20 neater and more organized. Furthermore, the installation of the portable desktop computer is very convenient. Simply place the monitor 20 and mini-PC 10 on a desktop, connect the external power supply 30, and then connect the first direct-connect interface 11 and the second direct-connect interface 21 to complete the connection.

[0036] The second direct-plug interface 21 is located on the back of the display 20. After the first direct-plug interface 11 and the second direct-plug interface 21 are connected, the mini-host 10 is fixed to the back of the display 20 through the mechanical cooperation between the interfaces, so that the mini-host 10 and the display 20 form an integrated form. The mini-host 10 can be placed on a desktop or suspended and fixed to the back of the display 20 through the connection of the first direct-plug interface 1111 and the second direct-plug interface 21. In this embodiment, the mini-host 10 is suspended and fixed to the back of the display 20, and the display 20 serves as the display core and mechanical support body of the entire system. In order to achieve the simplification and high integration of the computer system, the back of the display 20 is provided with a second direct-plug interface 21 with a specific function. This second direct-plug interface 21 is not only a physical channel for signal transmission, but its structural design also takes into account the functions of gravity bearing and positioning. Of course, in order to suspend the mini-host 10, a support can also be provided on the back of the display 20 to support the weight of the mini-host 10. The structure of the support member is not limited and can refer to existing technologies, for example, it can be set as a triangular bracket.

[0037] The mini PC 10 has a first direct-connect interface 11 on its casing surface. When users need to assemble a computer, they do not need to use traditional video cables. They only need to align the mini PC 10 with the interface position on the back of the monitor 20 and plug it in. When the first direct-connect interface 11 and the second direct-connect interface 21 complete the plugging action, a stable mechanical engagement is formed between them.

[0038] This mechanical fit is specifically manifested in the fact that the male and female connector structures of the first plug-in interface 11 and the second plug-in interface 21 have sufficient friction or locking strength, allowing the mini-PC 10 to be suspended and fixed on the back of the monitor 20. At this time, the entire weight of the mini-PC 10 is supported by the back structure of the monitor 20 or by the support component, and the two fit tightly in physical space, eliminating gaps and messy cables between the PC and the monitor.

[0039] In terms of appearance and physical form, the mini PC 10 and the monitor 20 are integrated into a single, unified structure. This connection method not only maximizes desktop space and presents a clean, all-in-one visual effect, but also retains the flexibility of independently disassembling and upgrading the mini PC 10. Because the mini PC 10 is fixed to the back, users only see the clean monitor screen when viewed from the front, achieving a truly portable, all-in-one office experience.

[0040] Furthermore, the mini PC 10 includes a chassis containing a motherboard and a dedicated graphics card. The motherboard has a slot corresponding to the dedicated graphics card. Unlike traditional designs where the dedicated graphics card is inserted perpendicularly into the slot, the dedicated graphics card is positioned substantially parallel to the motherboard, thus minimizing the size of the mini PC 10 in the motherboard's normal direction. In this embodiment, the dedicated graphics card is positioned substantially parallel to the motherboard via a PCIe extension cable. One end of the PCIe extension cable is inserted into the slot on the motherboard, and the other end is connected to the dedicated graphics card. The flexibility of the PCIe extension cable allows for this parallel positioning. This enables the mini PC 10 to achieve an unprecedentedly flat or miniaturized design. The dedicated graphics card is fixed to the motherboard parallel to it using a bracket or screws. Specifically, the dedicated graphics card can be fixed to the motherboard or to the inner wall of the chassis. Preferably, the dedicated graphics card is fixed to the inner wall of the chassis. In traditional layouts, the discrete graphics card is vertically suspended from the motherboard via its slot, creating continuous torsional and bending moments on the motherboard and slot itself, which can easily cause damage during transportation or movement. In this embodiment, the discrete graphics card is fixed to a robust chassis, its weight directly borne by the chassis structure. The connection to the motherboard is primarily electrical (via the PCIe extension cable) rather than mechanical. This significantly reduces the mechanical stress on the motherboard and improves the reliability and durability of the entire system during transportation and movement. This embodiment retains the discrete graphics card, ensuring the performance of the mini-PC 10, while the near-parallel design of the discrete graphics card and motherboard greatly reduces the size of the mini-PC 10, and also facilitates the transportation and movement of the chassis.

[0041] Furthermore, to achieve ultimate space compression and heat dissipation optimization, this invention fundamentally restructures the layout of core heat-generating components. The mini-PC 10 also houses a CPU, with the CPU and the discrete graphics card located on opposite sides of the motherboard. Specifically, the CPU is located on the traditional front side of the motherboard (i.e., the component mounting surface), while the discrete graphics card is fixed to the back of the motherboard. This embodiment achieves a three-dimensional stacking of the CPU and discrete graphics card in the normal direction of the motherboard, rather than a side-by-side arrangement on the motherboard plane. This allows for a significant reduction in the planar dimensions of the motherboard itself, directly resulting in a substantial reduction in the size of the chassis housing the motherboard in the corresponding dimension, achieving a revolutionary reduction in the volume of the mini-PC 10. Furthermore, the slot and the CPU can be located on the same side of the motherboard or on opposite sides of the motherboard.

[0042] Furthermore, to ensure that the mini-host 10 can still be adapted to the height-adjustable monitor 20 when placed on a desktop, a vertical adjustment structure is provided between the first direct-plug interface 11 and the mini-host 10. The mini-host can change its vertical height relative to the mini-host 10 along the vertical adjustment structure, so that the mini-host 10 remains within a preset spatial range when the monitor 20 is adjusted in height. In this embodiment, the mini-host 10 can dynamically adapt to the height adjustment of the monitor 20. The monitor 20 adopts an adjustable height design, which includes a display part with a screen and a support part for support. The display part can move up and down relative to the support part. The second direct-plug interface 21 is located on the side of the display part facing away from the screen. Therefore, when the height of the display part is adjusted, the absolute height of the second direct-plug interface 21 also changes accordingly, so that the main body of the host is always kept within a preset range in physical space.

[0043] Furthermore, the chassis is also equipped with a water cooling system, which includes a first water block, a second water block, a first cooling pipe, a second cooling pipe, and a radiator. The first water block is connected to the CPU and is located on the side of the CPU facing away from the motherboard. The second water block is connected to the graphics card and is located on the side of the graphics card facing away from the motherboard. The first and second water blocks are located on opposite sides of the motherboard. The first cooling pipe is connected to the first water block and the radiator at both ends; the second cooling pipe is connected to the second water block and the radiator at both ends. Further, the number of radiators is not fixed. There can be one radiator, in which case the first and second cooling pipes are connected to the same radiator; or there can be two radiators, namely a first radiator and a second radiator, in which case the first cooling pipe is connected to the first radiator and the second cooling pipe is connected to the second radiator. This embodiment uses a design with two radiators. The first and second radiators are fixedly attached to the inner or outer wall of the chassis. The mini PC 10 has a rectangular chassis with six inner / outer walls. The first and second radiators can be fixed to the same inner wall or to two different inner walls. In this embodiment, both the first and second radiators are fixed to the inner wall at the top of the chassis. Traditional PCs use large metal towers and fans to cool the CPU. These metal towers are perpendicular to the motherboard, occupying a significant amount of space within the chassis in the motherboard's normal direction. The advantage of a water-cooling system is that the first and second water blocks and the radiator are all flat, and the radiator is close to the inner / outer walls of the chassis. The volume of the water-cooling system is much smaller than that of the metal tower. Furthermore, the dedicated graphics card is positioned parallel to the motherboard, resulting in minimal space occupation in the motherboard's normal direction. This allows for miniaturization of the chassis, achieving a smaller size compared to mainstream PCs, making it easier to carry.

[0044] Compared to mainstream desktop computers, the mini desktop computer 10 of this application is much smaller, about one-fifth the size of a traditional mainstream desktop computer. The dimensions of the mini desktop computer 10 of this application are approximately 300*150*200.

[0045] Furthermore, in some embodiments, the mini-host 10 is connected to an external power supply 30 (mains power), and the mini-host 10 can simultaneously transmit electrical energy and video signals to the display 20 through the first through-hole interface 11 and the second through-hole interface 21. The transmission directions of the electrical energy and video signals between the mini-host 10 and the display 20 are the same. The mini-host 10 includes a first transformer module and a second transformer module. The first transformer module converts the voltage of the external power supply 30 into the corresponding voltage required by the mini-host 10; the second transformer module is electrically connected to the first through-hole interface 11 and is used to convert the corresponding voltage required by the mini-host 10 into the voltage required by the display 20, and transmit it to the display 20 through the first through-hole interface 11.

[0046] In this embodiment, the first through-hole interface 11 can be located on the motherboard or on the graphics card.

[0047] When the first through-hole interface 11 is located on the motherboard, the second transformer module is also located on the motherboard. The first through-hole interface 11 is connected to the +12V line of the motherboard through the second transformer module. The monitor 20 determines a suitable voltage value with the motherboard through the connected first through-hole interface 11 and second through-hole interface 21, and the second transformer module transforms the 12V to a suitable voltage value. Then, the first through-hole interface 11 and the second through-hole interface 21 transmit power to the monitor 20. The motherboard is provided with a connection module, which connects the graphics card and the first through-hole interface 11, and transmits the video signal generated by the graphics card and power to the monitor 20 simultaneously through the first through-hole interface 11.

[0048] When the first through-hole interface 11 is located on the graphics card, the second transformer module is also located on the graphics card, and the graphics card is equipped with a power output module. The power output module is connected to the first through-hole interface 11, allowing the first through-hole interface 11 to simultaneously output power and video signals. The first through-hole interface 11 is connected to the graphics card circuitry via the second transformer module. The monitor 20 determines a suitable voltage value with the graphics card through the connected first through-hole interface 11 and second through-hole interface 21, and the second transformer module transforms the graphics card voltage to a suitable voltage value. Then, the power is transmitted to the monitor 20 through the first through-hole interface 11 and the second through-hole interface 21.

[0049] Furthermore, in some embodiments, when the mini-host 10 is connected to an external power supply 30 and provides power to the display 20, to improve reliability and versatility, the display 20 is also provided with an independent power interface 23 for connecting to the external power supply 30. The redundant design of the power interface 23 for providing power to the display 20 means that even in the event of a failure, the display 20 can be used independently as a general-purpose display screen to connect to other devices such as laptops and game consoles, without relying on the power supply capability of the mini-host 10, thereby improving versatility.

[0050] Furthermore, to protect the circuitry of the display 20, when the display 20 is also connected to an external power supply 30, the display 20 is powered by the external power supply 30; the mini-host 10 transmits video signals to the display 20 through the first direct-plug interface 11 and the second direct-plug interface 21, but does not transmit power. When the display 20 is not connected to the external power supply 30, the display 20 is powered by the mini-host 10.

[0051] More specifically, a first judgment module 24 can be set in the display 20. The first judgment module 24 is connected to the second direct plug interface 21 and the power interface 23. When the first judgment module 24 detects that the power interface 23 is connected to an external power supply 30, the first judgment module 24 communicates with the mini host 10 through the first direct plug interface 11, so that the mini host 10 only transmits video signals through the first direct plug interface 11 and no longer provides power.

[0052] Furthermore, in some embodiments, the display 20 is connected to an external power supply 30, and the display 20 can provide power to the mini-PC 10 through the first through-hole interface 11 and the second through-hole interface 21. The mini-PC 10 transmits video signals to the display 20, and the transmission directions of the power and video signals between the mini-PC 10 and the display 20 are opposite. The display 20 is equipped with a third transformer module and a fourth transformer module. The third transformer module converts the voltage of the external power supply 30 into the voltage required by the internal components of the display 20; the fourth transformer module is connected to the second through-hole interface 21 and can convert the internal voltage of the display 20 into the voltage required by the mini-PC 10, and transmit it to the mini-PC 10 through the first through-hole interface 11. Furthermore, the mini-PC 10 is equipped with a power distribution module, the first through-hole interface 11 is connected to the power distribution module, and the power distribution module is connected to the motherboard and the graphics card respectively. The power distribution module receives power from the display 20 through the connected first direct-plug interface 11 and second direct-plug interface 21, and provides power to the motherboard and graphics card according to their needs.

[0053] Although the present invention has been disclosed through the above embodiments, the scope of the present invention is not limited thereto. Without departing from the concept of the present invention, the above components can be replaced by similar or equivalent elements known to those skilled in the art.

Claims

1. A portable desktop computer, characterized in that, include: Mini PC (10) has a first plug-in interface (11). The monitor (20) is provided with a second direct plug interface (21) and a second wire plug interface (22); the monitor (20) can be connected to the main host via the second wire plug interface (22) and a connecting cable. The first plug-in interface (11) and the second plug-in interface (21) can be directly plugged into each other to realize the connection between the mini host (10) and the display (20).

2. A portable desktop computer as described in claim 1, characterized in that, The mini-host (10) can be connected to an external power source (30). The mini-host (10) can provide power to the display (20) and transmit video signals through the connection of the first plug-in interface (11) and the second plug-in interface (21).

3. A portable desktop computer as described in claim 1, characterized in that, The display (20) can be connected to an external power source (30). The display (20) can provide power to the mini host (10) through the connection of the first direct-plug interface (11) and the second direct-plug interface (21). The mini host (10) can input video signals to the display (20) through the connection of the first direct-plug interface (11) and the second direct-plug interface (21).

4. A portable desktop computer as described in claim 2, characterized in that, The display (20) is also provided with an independent power interface (23), which is used to connect an external power source (30). When the display (20) is connected to an external power supply (30), the display (20) is powered by the external power supply (30); the mini host (10) transmits video signals to the display (20) through the connection of the first direct plug-in interface (11) and the second direct plug-in interface (21).

5. A portable desktop computer as described in claim 1, characterized in that, The second direct-plug interface (21) is located on the back of the display (20); after the first direct-plug interface (11) and the second direct-plug interface (21) are plugged in, the mini host (10) is fixed to the back of the display (20) through the mechanical cooperation between the interfaces, so that the mini host (10) and the display (20) form an integrated form.

6. A portable desktop computer as described in claim 1, characterized in that, The mini PC (10) is equipped with a motherboard and a dedicated graphics card. The dedicated graphics card is set in a basically parallel relationship with the motherboard to reduce the size of the mini PC (10) in the direction normal to the motherboard.

7. A portable desktop computer as described in claim 6, characterized in that, The mini-PC (10) also contains a CPU, and the CPU and the discrete graphics card are located on opposite sides of the motherboard.

8. A portable desktop computer as described in claim 5, characterized in that, A vertical adjustment structure is provided between the first direct-plug interface (11) and the mini host (10). The first direct-plug interface (11) can change its vertical height relative to the mini host (10) along the vertical adjustment structure so that the mini host (10) is kept within a preset space range when the display (20) is raised and lowered.

9. A portable desktop computer as described in claim 8, characterized in that, The first through-hole interface (11) is installed on the discrete graphics card and electrically connected to it.

10. A portable desktop computer as described in claim 7, characterized in that, The chassis is also equipped with a water cooling system, which includes a first water block, a second water block, a first cooling pipe, a second cooling pipe, and a radiator. The first water block is connected to the CPU, and the second water block is connected to the graphics card. The first water block and the second water block are located on both sides of the motherboard. The first cooling pipe is connected to the first water cooling head and the radiator at both ends respectively; the second cooling pipe is connected to the second water cooling head and the radiator at both ends respectively; the radiator is fixed to the inner or outer wall of the mini host (10).

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