Sony PCG-K37 Manual

Page of 151
Disconnecting a mouse or keyboard 
You can disconnect a USB 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 cable from the USB port. 
Page 36