| 摘要 |
An expansion card having an expansion edge comprises: a board having an edge supporting a special bus method for controlling input/output of a signal; fixing means for securely attaching the board to system main frame by using screws, the fixing means being provided on an edge of the board and having a plurality of input/output terminals; at least one expansion connector connected to an expansion card via a cable and to the board for transmitting signals to and receiving signals from an expansion card; and an expansion edge additionally formed on an edge of the board, and connected to at least one expansion connector by a wiring pattern, the expansion edge being mated with an expansion edge connector of the main board, thereby allowing the board to exchange with each expansion card. Since the expansion card can transmit and receive an audio signal to and from expansion cards, engaging an expansion edge additionally formed in the audio card with an expansion edge connector in the main board avoids use of an expansion connector and a cable, saves money, reduces working procedures, and shields the electromagnetic interference produced by a cable.
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