Restricting USB Functions
You can disable the USB port for computer connection located on the back side of the machine.
1
Press 
.
.2
Use 
/
to select <System Management Settings>, and press 
.
/ to select <System Management Settings>, and press .If the logon screen appears, enter the correct ID and PIN using the numeric keys, and then press 
. Logging on to the Machine
. Logging on to the Machine3
Select <Use as USB Device>, and press .
.4
Select <Off>, and press .
.
<Off>Disables the USB port of the machine.
<On>Enables the USB port of the machine.
5
Restart the machine.
Turn OFF the machine, wait for at least 10 seconds, and turn it back ON.