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Keyboard and Mouse Connectors

The types of keyboard and mouse connectors your PC will have depend on the style and form factor of your motherboard. There are generally two arrangements. Newer PCs, PCs using the ATX, LPX or NLX form factors, and many proprietary (brand name) machines, use a pair of small 6-pin connectors for the keyboard and dedicated (PS/2) mouse. Older PCs using the AT form factor use the older, large, 5-pin keyboard connector, and do not have a dedicated mouse port connector. These PCs use a serial port for the mouse.

Tip: Some motherboards don't come with a built-in PS/2 mouse port, but include a header for a PS/2 mouse port, which you can use to add a PS/2 mouse port yourself.

These connectors are located at the back of the motherboard.

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