| 摘要 |
A rock installation device for preventing unlicensed copying a software. The rock installation device comprises a first connector(22) which is connected to a PCB(12); a second connector(26) which is connected to a connector(20) of a printer port; a first connecting means(28) which connects the first connector(22) to the PCB(12); and a second connecting means(30) which connects the second connector(26) to the connector(2). A rock is engaged between the first connector(22) and the second connector(26).
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