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Connectors, Jumpers and Switch
1230B0049401 3-11
3.9 Keyboard and Mouse Ports (J54, 53)
PS/2 keyboard and mouse ports are located on the back panel. The +5V lines to these ports are
protected with a PolySwitch* circuit that, like a self-healing fuse, reestablishes the connection
after an overcurrent condition is removed.
The PS/2 keyboard port and the pin definition are shown below:
Figure 3-10 Keyboard Port
Table 3-10 Keyboard Port Pin Definition
Pin Signal Name
1 Keyboard Data
2 NC
3 Ground
4 +5V
5 Keyboard Clock
6 NC