Patent Application
20130166806
1. Technical Field
The present disclosure generally relates to a PCI riser card, and particularly relates to a PCI riser card with a mistake-proof design.
2. Description of Related Art
PCI riser cards are often used to provide additional PCI slots for adding PCI expansion cards to a system board (also known as a mainboard) enclosed in a system case. Because the PCI riser cards rise above the system board, the PCI riser cards allow connecting additional PCI expansion cards to the system board in an orientation that is parallel to the system board and save space within the system case.
Therefore, there is a need to provide a PCI riser card which requires that a specific PCI expansion card can only be inserted into a specific PCI connector among several connectors.
Many aspects of the embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.
Each of the PCI connectors 13, 14, and 15 includes two elongated slots, of which one is longer than the other. Specifically, the PCI connector 13 includes an elongated slot 131 and an elongated slot 132 longer than the elongated slot 131; the PCI connector 14 includes an elongated slot 141 and an elongated slot 142 longer than the elongated slot 141; and the PCI connector 15 includes an elongated slot 151 and an elongated slot 152 longer than the elongated slot 151. The PCI connector 13 is parallel to the PCI connector 14 (or the PCI connector 15) and is arranged in inverse relative to the PCI connector 14 (or the PCI connector 15). Namely, the longer elongated slot 132 of the PCI connector 13 and the shorter elongated slot 141 of the PCI connector 14 are directly across from each other; the shorter elongated slot 131 of the PCI connector 13 and the longer elongated slot 142 of the PCI connector 14 are directly across from each other.
The PCI expansion card 20 includes a PCB 21, a mating portion 22, and a bulkhead 23. The mating portion 22 extends from an edge of the PCB 21. The bulkhead 23 is secured to another edge of the PCB 21. The mating portion 22 may engage with the PCI connector 13 and be connected to the PCI connector 13. Specifically, the mating portion 22 includes a first insertion tab 221 and a second insertion tab 222 longer than the first insertion tab 221. The first insertion tab 221 can fit in the shorter elongated slots 131, 141, and 151. The second insertion tab 222 can only fit in the longer elongated slots 132, 142, and 152. The first insertion tab 221 is nearer to the bulkhead 23 than the second insertion 222. Therefore, the PCI expansion card 20 can only be inserted into the PCI connector 13, and not the PCI connector 14 or the PCI connector 15.
Referring to
It is to be understood, however, that even though numerous characteristics and advantages have been set forth in the foregoing description of embodiments, together with details of the structures and functions of the embodiments, the disclosure is illustrative only and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201110443673.0 | Dec 2011 | CN | national |
