PCIE Module and Chassis

Abstract

The present invention discloses a PCIE module and a chassis. The PCIE module includes: a PCIE bracket, a riser card, and a cable storage box; a PCIE card is installed on the PCIE bracket; both the riser card and the cable telescopic storage box are fixedly installed on the PCIE bracket; the cable telescopic storage box contains cables and uses tension to contract the cables into the interior of the cable telescopic storage box when the PCIE module is inserted into the chassis. One end of the cable is connected to the riser card, and the other end is connected to the server motherboard; it can realize hot pluggable maintenance of the PCIe module directly from the rear of the server without opening the upper cover during operation, which can improve the maintenance efficiency. Especially, the benefit of convenient maintenance after the server is installed in the cabinet is more obvious, without having to first pull out the cabinet and then open the upper cover; moreover, this solution is applicable to all PCIe cards and has strong applicability.

Description

Technical Field

[0001] The present invention relates to the field of server components, and particularly to a PCIE module and a chassis. Background Art

[0002] The PCIe module is a commonly used functional module for servers, usually composed of a PCIe card, a riser card, and a PCIe bracket. The PCIe card can be a card with any function that conforms to the PCIe specification. Therefore, the PCIe module has flexible and diverse functions and is widely used on servers.

[0003] However, the current common assembly method of the PCIe module is to assemble and disassemble it from the up and down directions after opening the upper cover. This assembly method is a bit inconvenient when maintaining the PCIe module. The upper cover must be opened, and hot plugging is not possible.

[0004] In the prior art, there have also been hot-pluggable PCIE modules, but they can only be applied to PCIe cards of a single type, such as M.2 hard disks, and can only achieve hot plugging of the M.2 hard disk module on the PCIe card, and cannot achieve hot plugging of the entire PCIe module. Summary of the Invention

[0005] The object of the present invention is to provide a PCIE module and a chassis that can achieve hot plugging of any PCIe card.

[0006] The technical solution of the present invention is as follows: In the first aspect, the present invention provides a PCIE module, which includes: a PCIE bracket, a riser card, and a cable retraction box;

[0007] A PCIe card is installed on the PCIE bracket;

[0008] The riser card and the cable telescopic retraction box are both fixedly installed on the PCIE bracket;

[0009] The cable telescopic retraction box contains cables and uses the pulling force to contract the cables into the interior of the cable telescopic retraction box when the PCIE module is inserted into the chassis. One end of the cable is connected to the riser card, and the other end is connected to the server motherboard; when the PCIE module is pulled out, the cable connected to the riser card extends out of the cable telescopic retraction box without being disconnected. After the maintenance is completed and the PCIE module is inserted into the chassis, the cable is contracted into the cable telescopic retraction box for storage, without affecting the insertion of the module into the accommodation space.

[0010] In a preferred embodiment, a connector is provided on the surface of the riser card, one end of the cable is connected to the connector, and the other end is connected to the server motherboard; or:

[0011] One end of the cable is snap-connected to the surface of the riser card, and the other end is connected to the server motherboard. Instead of using the conventional gold finger method, a connector for connecting the cable is provided on the riser card or the cable is directly snapped on, so that the length of the cable can be made very long, so that there is enough length for the cable to maintain signal connection during hot plugging and unplugging. At the same time, when the SI loss of the system link is large, the cable has less loss than the gold finger, which is beneficial to improving the link signal quality.

[0012] In a preferred embodiment, the riser card is disposed between the cable telescopic storage box and the PCIE bracket; the distance between the riser card and the cable telescopic storage box is reduced, the overall structure is more compact, and the unnecessary cable stretching distance is reduced.

[0013] In a preferred embodiment, the cable telescopic storage box includes:

[0014] A base, a cover plate, a scroll spring and a central shaft;

[0015] The base is connected to the cover plate to form an open box body for accommodating the cable. An inlet and an outlet are respectively arranged at both ends of the open box body. The central shaft is connected to the base and is located inside the open box body. One end of the scroll spring is fixed on the central shaft, and the other end is fixed to the cable to use its pulling force to contract and accommodate the cable into the open box body. When the PCIE module is inserted into the chassis, the cable is contracted into the cable telescopic storage box under the pulling force of the scroll spring. During the process of pulling out the PCIE module, the pulling force applied to pull out the PCIE module overcomes the pulling force of the scroll spring, so that the cable gradually extends out of the cable telescopic storage box from the outlet of the cable telescopic storage box.

[0016] In a preferred embodiment, the PCIE bracket includes a first panel and a second panel, the first panel and the second panel are arranged in parallel, and a third panel and a fourth panel are connected between the first panel and the second panel;

[0017] Both the third panel and the fourth panel are perpendicular to the first panel and the second panel, and the third panel and the fourth panel are perpendicular to each other;

[0018] In a preferred embodiment, the riser card and the cable telescopic storage box are both installed on the third panel; while realizing the support and fixation of the PCIE card, a part of the area of the PCIE card is exposed, which is convenient for inserting and removing the PCIE card and improving the heat dissipation efficiency.

[0019] In a preferred embodiment, a sheet metal rear window is provided on the fourth panel; after the PCIE module is directly inserted into the chassis from the rear, the Riser card is interconnected with the chassis motherboard, and the sheet metal rear window can play an electromagnetic shielding effect.

[0020] In a preferred embodiment, the PCIE card is inserted into the opening formed by the first panel, the second panel, the third panel and the fourth panel so that the slots on the riser card are inserted into the gold fingers in an opposing manner.

[0021] In a preferred embodiment, screws are connected to the PCIE bracket for locking the PCIE module after the PCIE module is installed; this facilitates further locking of the PCIE module after it is inserted and also facilitates disassembly and assembly.

[0022] In a second aspect, the present invention further provides a chassis, which includes a chassis main body and a PCIE module as described in any one of the first aspects;

[0023] The PCIE module is inserted into the chassis main body, and the PCIE module is fixed to the chassis main body by screws.

[0024] The advantages of the present invention are as follows: A PCIE module and a chassis are provided. The PCIE module includes: a PCIE bracket, a riser card, and a cable storage box; a PCIE card is installed on the PCIE bracket; both the riser card and the cable telescopic storage box are fixedly installed on the PCIE bracket; the cable telescopic storage box contains cables and uses tension to contract the cables into the interior of the cable telescopic storage box when the PCIE module is inserted into the chassis. One end of the cable is connected to the riser card, and the other end is connected to the server motherboard; it can achieve hot pluggable maintenance of the PCIe module directly from the rear of the server. When operating, there is no need to open the upper cover, which can improve the maintenance efficiency. Especially, the benefit of convenient maintenance after the server is installed in the cabinet is more obvious, without having to first pull out the cabinet and then open the upper cover; moreover, this solution is applicable to all PCIe cards and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is an overall view of the PCIE module provided by the present application;

[0027] Figure 2 It is an exploded view of the PCIE module provided by the present application;

[0028] Figure 3Schematic diagram of the riser card in the PCIE module provided by this application;

[0029] Figure 4 Schematic diagram of the cable telescopic storage box structure in the PCIE module provided by this application;

[0030] Figure 5 Partial schematic diagram of the PCIE bracket in the PCIE module provided by this application;

[0031] Figure 6 Schematic diagram of the PCIE module being pulled out of the chassis provided by this application;

[0032] Figure 7 Schematic diagram of the PCIE module being inserted into the chassis provided by this application;

[0033] Wherein: 100, PCIE module; 110, PCIE bracket; 111, first panel; 112, second panel; 113, third panel; 114, fourth panel; 120, riser card; 121, connector; 130, cable telescopic storage box; 131, base; 132, cover plate; 133, scroll spring; 134, central axis; 135, inlet; 136, outlet; 140, PCIE card; 150, screw; 200, chassis main body. Specific embodiments

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0035] As described in the background art, in the prior art, the PCIE card, as an indispensable expansion function card, is widely used for its plug-and-play characteristics. Currently, the number of PCIE cards supported by a single server is increasing, and it often occurs that some of the PCIE cards need to be replaced. The PCIE card is usually set in the PCIE module. When replacing the PCIE card, the entire PCIE module needs to be taken out. Usually, after opening the upper cover, it is assembled and disassembled from the up and down directions, which is inconvenient for maintenance. And after the PCIE module is pulled out, the signal will be disconnected, and hot-swap maintenance cannot be performed.

[0036] To solve the above problems, the present application creatively proposes a PCIE module and a chassis. The PCIE module includes: a PCIE bracket, a riser card, and a cable storage box; a PCIE card is installed on the PCIE bracket; the riser card and the cable telescopic storage box are both fixedly installed on the PCIE bracket; the cable telescopic storage box contains cables and uses the pulling force to contract the cables into the interior of the cable telescopic storage box when the PCIE module is inserted into the chassis. One end of the cable is connected to the riser card, and the other end is connected to the server motherboard; when the PCIE module is pulled out, the cable connected to the riser card extends out of the cable telescopic storage box and will not be disconnected. After the maintenance is completed and the PCIE module is inserted into the chassis, the cable is contracted into the cable telescopic storage box for storage, and it will not affect the insertion of the module into the accommodation space.

[0037] Next, the solutions of the present application will be introduced in detail in conjunction with the drawings and various embodiments.

[0038] Embodiment 1: This embodiment introduces the architecture of the PCIE module in the present application.

[0039] Specifically, referring to Figure 1 and Figure 2 as shown, this embodiment provides a PCIE module 100, and the PCIE module 100 includes: a PCIE bracket 110, a riser card 120, and a cable storage box 130;

[0040] A PCIE card is installed on the PCIE bracket 110. Referring to Figure 1 , Figure 2 and Figure 5 as shown, in one implementation, the PCIE bracket 110 includes a first panel 111 and a second panel 112. The first panel 111 and the second panel 112 are arranged in parallel, and a third panel 113 and a fourth panel 114 are connected between the first panel 111 and the second panel 112; both the third panel 113 and the fourth panel 114 are perpendicular to the first panel 111 and the second panel 112, and the third panel 113 and the fourth panel 114 are perpendicular to each other. The first panel 111, the second panel 112, the third panel 113, and the fourth panel 114 are connected to enclose an open space to accommodate the PCIE card 140. The PCIE card 140 is inserted into the opening surrounded by the first panel 111, the second panel 112, the third panel 113, and the fourth panel 114 so that the slots on the riser card 120 and the gold fingers are inserted into each other.

[0041] The first panel 111, the second panel 112, the third panel 113 and the fourth panel 114 can be integrally formed, or can be connected by independent panels to each other. This embodiment does not make any limitation in this regard. In this embodiment, the area of the first panel 111 is smaller than that of the second panel 112, so as to increase the exposed area of the PCIE card while realizing the support and fixation of the PCIE card 140 and improving the heat dissipation efficiency.

[0042] A plug-in part matching the chassis is provided on any at least one of the first panel 111, the second panel 112, the third panel 113 and the fourth panel 114. Exemplarily, matching bayonets and card joints are provided on the installation surface of the chassis and the PCIE bracket 110. It can be that the card joint is provided on the installation surface of the chassis, and the corresponding bayonet is provided on the installation surface of the PCIE bracket 110, or it can be that the bayonet is provided on the installation surface of the chassis, and the corresponding card joint is provided on the installation surface of the PCIE bracket 110. This embodiment does not make specific limitations on the setting positions and the number of the bayonets and the card joints. Of course, it can also be that the chassis and the PCIE bracket 110 are assembled through matching chutes and sliders. This embodiment does not make any limitation on the specific assembly method of the chassis and the PCIE bracket 110.

[0043] The riser card 120 and the cable telescopic storage box 130 are both fixedly installed on the PCIE bracket 110; in one embodiment, the riser card 120 is arranged between the cable telescopic storage box 130 and the PCIE bracket 110. Specifically, during installation, first, the riser card 120 is locked and installed on the PCIE bracket 110 by screws, and then the side wall of the cable telescopic storage box 130 is attached to the surface of the riser card 120, and the cable storage box is locked and fixed to the PCIE bracket 110 by screws.

[0044] More specifically, the riser card 120 and the cable telescopic storage box 130 are both installed on the third panel 113. A sheet metal rear window is provided on the fourth panel 114. After the PCIE module 100 is directly inserted into the chassis from the rear, the Riser card is interconnected with the chassis motherboard, and the sheet metal rear window can play an electromagnetic shielding effect.

[0045] The cable telescopic storage box 130 houses a cable (not shown in the figure) and uses the tension to contract the cable into the cable telescopic storage box 130 when the PCIE module 100 is inserted into the chassis. One end of the cable is connected to the riser card 120, and the other end is connected to the server motherboard.

[0046] Specifically, a connector 121 is provided on the surface of the riser card 120. One end of the cable is connected to the connector 121, and the other end is connected to the server motherboard; or: one end of the cable is clamped to the surface of the riser card 120, and the other end is connected to the server motherboard. The interconnection between the riser card and the motherboard does not adopt the conventional gold finger method. Instead, a connector 121 for connecting the cable is provided on the riser card or the cable is directly clamped, so that the length of the cable can be made very long, so that the cable has enough length to maintain signal connection during hot plugging. At the same time, when the SI loss of the system link is large, the cable has less loss than the gold finger, which is beneficial to improving the link signal quality.

[0047] In one embodiment, the cable telescopic storage box 130 includes:

[0048] A base 131, a cover plate 132, a scroll spring 133 and a central shaft 134 installed on the third panel 113 of the PCIE bracket 110; the base 131 and the cover plate 132 are connected to form an open box body for accommodating the cable. An inlet and an outlet are respectively provided at both ends of the open box body. In this embodiment, refer to Figure 4As shown, the base 131 and the cover plate 132 have the same shape and matching dimensions. Slots are provided on the mating surfaces. When the cover plate 132 and the base 131 are assembled, an open box body is formed. The slots on the mating surfaces are butted to form an inlet 135 and an outlet 136. The cable enters from the inlet 135 and extends out from the outlet 136. The inlet 135 and the outlet 136 can be in the same plane or not in the same plane. In this embodiment, it is preferably that the inlet 135 and the outlet 136 are in the same plane and the plane is perpendicular to the base 131 and the cover plate 132, making the telescoping more labor-saving. The central shaft 134 is connected to the base 131 and is located inside the open box body. Preferably, the central shaft 134 is located at the center of the base 131 and is perpendicular to the base 131. One end of the scroll spring 133 is fixed to the central shaft 134, and the other end is fixed to the cable to use its pulling force to contract and accommodate the cable into the open box body. Since the distance from the riser card 120 to the server motherboard is shorter when the PCIE module 100 is inserted, and the distance from the riser card 120 to the motherboard is longer after it is pulled out, in order to keep the signal connected during the hot plugging process, the cable needs to be of a longer length. In this application, the cable enters from the inlet 135 of the open box body formed by the assembly of the base 131 and the cover plate 132, winds around the scroll spring 133, and extends out from the outlet 136. When the PCIE module 100 is inserted into the chassis, the cable contracts into the cable telescopic storage box 130 under the pulling force of the scroll spring 133. During the process of pulling out the PCIE module 100, the pulling force applied to pull out the PCIE module 100 overcomes the pulling force of the scroll spring 133, causing the cable to gradually extend out of the outlet 136 of the cable telescopic storage box 130 from the cable telescopic storage box 130.

[0049] Preferably, the cable winds around the scroll spring 133, and the shape after winding is the same as the shape of the scroll spring 133, that is, it winds into a roll. Correspondingly, both the base 131 and the cover plate 132 are provided with arc surfaces so that the inner surface of the open box body formed after their assembly is an arc surface. The radian of the arc surface is the same as the radian of the scroll spring 133 and the cable roll wound around the scroll spring 133, increasing the utilization rate of the internal space of the open box body. The second panel 112 of the PCIE bracket 110 extends towards the third panel 113 with an extension part, and the side surface of the cable telescopic storage box 130 abuts against the extension part.

[0050] In one embodiment, a screw 150 for locking the PCIE module 100 after the installation of the PCIE module 100 is connected to the PCIE bracket 110. Specifically, the screw 150 is arranged at the tail of the PCIE bracket 110, that is, at one end of the second panel 112 of the PCIE bracket 110 adjacent to the fourth panel 114. More specifically, the screw 150 is perpendicular to the second panel 112. In this embodiment, referring toFigure 5 As shown, one end of the second panel 112 that is joined to the fourth panel 114 extends outward to form an extension part, and a screw hole is formed in the extension part. The screw hole is fitted with the screw. When it is necessary to lock the PCIE module 100 after it is inserted into the chassis, the screw 150 is passed through the screw hole and fixed to the chassis.

[0051] The PCIE module provided in this embodiment includes: a PCIE bracket, a riser card, and a cable storage box; a PCIE card is installed on the PCIE bracket; the riser card and the cable telescopic storage box are both fixedly installed on the PCIE bracket; the cable telescopic storage box contains cables and uses the pulling force to contract the cables into the cable telescopic storage box when the PCIE module is inserted into the chassis. One end of the cable is connected to the riser card, and the other end is connected to the server motherboard; it can realize the hot pluggable maintenance of the PCIe module directly from the rear of the server. When operating, there is no need to open the upper cover, which can improve the maintenance efficiency. Especially, the benefit of convenient maintenance after the server is installed in the cabinet is more obvious. There is no need to first pull out the cabinet and then open the upper cover; moreover, this solution is applicable to all PCIe cards and has strong applicability.

[0052] Embodiment 2: Corresponding to the above Embodiment 1, the present invention further provides a chassis.

[0053] Refer to Figure 6 And Figure 7 As shown, this embodiment provides a chassis, which includes a chassis main body 200 and the PCIE module 100 as described in Embodiment 1;

[0054] The PCIE module 100 is plugged into the chassis main body 200, and the PCIE module 100 is fixed to the chassis main body 200 by screws 150.

[0055] The rear window at the PCIE module 100 is not riveted to the base, but is designed on the PCIE bracket 110.

[0056] In one example, the PCIE module 100 is snap-fitted to the chassis body. Specifically, the PCIE module 100 is snap-connected to the mating surface of the chassis body. More specifically, the PCIE bracket 110 of the PCIE module 100 is snap-connected to the slot surface of the chassis body. The PCIE bracket 110 is formed by enclosing a first panel 111, a second panel 112, a third panel 113, and a fourth panel 114. On the outer surface of any at least one of the first panel 111, the second panel 112, the third panel 113, and the fourth panel 114, there is provided a plugging portion that matches the slot of the chassis body. Exemplarily, on the contact surface between the chassis body and the PCIE bracket 110, there are provided matching bayonets and bayonet joints. It can be that the bayonet joints are provided on the slot surface of the chassis body, and corresponding bayonets are provided on the mounting surface of the PCIE bracket 110, or it can be that bayonets are provided on the slot surface of the chassis body, and corresponding bayonet joints are provided on the mounting surface of the PCIE bracket 110. Regarding the setting positions and the number of bayonets and bayonet joints, this embodiment does not make specific limitations.

[0057] In another example, the chassis body is slidably mated with the PCIE module 100. Specifically, on the plugging surface between the chassis body and the PCIE module 100, there are provided matching sliders and sliding grooves. When the PCIE module 100 is inserted, the slider is fitted into the sliding groove and slides to insert the PCIE module 100 into the chassis body. More specifically, on the outer surface of the PCIE bracket 110 of the PCIE module 100, there are outwardly protruding sliders, and on the slot surface of the chassis body, there are sliding grooves that match the sliders, or on the outer surface of the PCIE bracket of the PCIE module 100, there are grooves, i.e., sliding grooves, and on the slot surface of the chassis body, there are sliders that match the sliding grooves. Regardless of where the sliders and the sliding grooves are located, the sliding direction of the slider in the sliding groove is consistent with the plugging and unplugging direction of the PCIE module 100. When the PCIE module 100 is inserted into the chassis body, the slider slides in the sliding groove to limit the plugging and unplugging direction and restrict the movement of the PCIE module 100 in other directions.

[0058] The tail end of the PCIE module 100 (the end that is exposed from the slot of the chassis body after insertion) is fixed to the chassis body by screws. After the PCIE module 100 is inserted into the chassis body, the tail end of the PCIE module is fixedly connected to the chassis body with screws to fix the PCIE module and prevent the PCIE module 100 from shifting in the plugging and unplugging direction, thereby completing the limitation of the PCIE module 100 in each direction.

[0059] Of course, the PCIE module 100 and the chassis body can also be mated in other ways. The above-mentioned snap-fitting and the mating of the sliding groove and the slider are only for example purposes and are not the specific limitations on the mating method of the PCIE module 100 and the chassis body in this application.

[0060] For all PCIE cards with all functions, hot-swap maintenance of the entire PCIE module can be achieved. It is not necessary to open the upper cover for plugging and unplugging maintenance, which improves the portability and efficiency of PCIE module maintenance. In particular, the maintenance efficiency after the server is installed in the cabinet is greatly improved. At the same time, maintenance without shutting down the machine can avoid losses caused when some important servers stop running.

[0061] Each embodiment in this specification is described in a progressive manner. For the same or similar parts between each embodiment, reference can be made to each other. The key point of each embodiment is to illustrate the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple. For the relevant parts, reference can be made to the description of the method embodiment. The device embodiments described above are only illustrative. The modules described as separate components may or may not be physically separated. The components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed to multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative work.

[0062] In addition, it should be understood that the terms "first", "second", "third", and "fourth" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of such features.

[0063] Of course, the above embodiments are only for explaining the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly. However, the protection scope of the present invention cannot be limited by this. All modifications made according to the spirit of the main technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. A PCIE module, characterized in that, the PCIE module includes: a PCIE bracket, a riser card, and a cable telescopic storage box; a PCIE card is installed on the PCIE bracket, the PCIE bracket includes a first panel and a second panel, the first panel and the second panel are arranged in parallel, and a third panel and a fourth panel are connected between the first panel and the second panel. The third panel and the fourth panel are both perpendicular to the first panel and the second panel, and the third panel and the fourth panel are perpendicular to each other. The riser card and the cable telescopic storage box are both installed on the third panel; the cable telescopic storage box contains a cable and uses the pulling force to contract the cable into the interior of the cable telescopic storage box when the PCIE module is inserted into the chassis. One end of the cable is connected to the riser card, and the other end is connected to the server motherboard; the cable telescopic storage box includes: a base, a cover plate, a scroll spring, and a central shaft; the base and the cover plate are connected to form an open box body for accommodating the cable. An inlet and an outlet are respectively arranged at both ends of the open box body. The central shaft is connected to the base and is located inside the open box body. One end of the scroll spring is fixed on the central shaft, and the other end is fixed to the cable to contract and accommodate the cable into the open box body by using its pulling force.

2. The PCIE module according to claim 1, characterized in that, a connector is arranged on the surface of the riser card. One end of the cable is connected to the connector, and the other end is connected to the server motherboard; or: one end of the cable is clamped to the surface of the riser card, and the other end is connected to the server motherboard.

3. The PCIE module according to claim 1, characterized in that, the riser card is arranged between the cable telescopic storage box and the PCIE bracket.

4. The PCIE module according to any one of claims 1-3, characterized in that, a sheet metal rear window is arranged on the fourth panel.

5. The PCIE module according to claim 4, characterized in that, the PCIE card is inserted into the opening surrounded by the first panel, the second panel, the third panel, and the fourth panel so that the slots and the gold fingers on the riser card can be inserted into each other.

6. The PCIE module according to claim 1, characterized in that, screws for locking the PCIE module are connected to the PCIE bracket after the PCIE module is installed.

7. A chassis, characterized in that, the chassis includes a chassis main body and the PCIE module according to any one of claims 1-6; the PCIE module is inserted into the chassis main body, and the PCIE module is fixed to the chassis main body by screws.

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