Sony PCG-FX390K - Manual (Page 48)

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48
Connecting an External Mouse or Keyboard
You can connect an external mouse or keyboard to the optional port replicator
using a similar type PS/2® plug or adapter. You can only connect one external
device at a time. Therefore, you cannot connect both a PS/2 mouse and PS/2
keyboard simultaneously.
To connect an external mouse or keyboard
1 Turn off your notebook.
2 Locate the mouse/keyboard port on the port replicator identified by the /
symbols.
3 Plug the mouse or the keyboard cable into this port with the arrow facing up.
4 See the manual that came with your mouse or keyboard for more
information on its installation and use.
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Before you connect or disconnect the mouse or keyboard, turn off the notebook.