Sony PCG-VX89P - Manual (Page 135)

Using External Mice and Keyboards
135
Disconnecting a mouse or keyboard
You can disconnect a USB mouse or keyboard when the computer is turned on or
off. Disconnecting the USB mouse or keyboard when the computer is in a power
saving mode (Standby or Hibernate) may cause the computer to malfunction.
To disconnect the USB mouse or keyboard when the computer is off
❑ Unplug the USB cable from the USB port on the computer.
Connecting a USB Mouse or Keyboard
✍
See the manual that came with your mouse or keyboard for more information on its
installation and use.
USB port
USB cable