Sony VGX-TP20EB - Manual (Page 90)

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Using Peripheral Devices
Connecting a Universal Serial Bus (USB) Device
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You need to slide open the front panel door to access the USB ports on the front.
Connecting a USB Mouse
To connect a USB mouse
1 Choose the USB port (1) you prefer to use.
2 Plug the USB mouse cable (2) into the USB port.
You can now use your USB mouse (not supplied) (3).