Sony PCG-GRX700P User Manual page 90

Disconnecting a mouse or keyboard
You can disconnect a USB or PS/2 mouse or keyboard when the computer is on or off. Disconnecting the mouse or keyboard
when the computer is in a power saving mode (Standby or Hibernate) may cause the computer to malfunction.
To disconnect a mouse or keyboard

Unplug the USB or PS/2 cable from the USB or PS/2 port.
Page 90