Asus A31AD User Manual page 19

Connecting a USB keyboard and a USB mouse
Connect a USB keyboard and a USB mouse to the USB ports on the rear panel of your computer.
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Connect your USB keyboard and USB mouse to the USB 2.0 ports.
Connecting the power cord
Connect one end of the power cord to the power connector on the rear panel of your computer
and the other end to a power source.
ASUS A31AD / F31AD / K31AD / M12AD / M52AD 19