Asus PU500CA - Manual (Page 20)

20 Notebook PC User Manual
LAN Port
The RJ-45 LAN port with eight pins is larger than the RJ-11
modem port and supports a standard Ethernet cable for
connection to a local network. The built-in connector allows
convenient use without additional adapters.
Power (DC) Input
The supplied power adapter converts AC power to DC
power for use with this jack. Power supplied through this
jack supplies power to the Notebook PC and charges the
internal battery pack. To prevent damage to the Notebook
PC and battery pack, always use the supplied power
adapter.
The adapter may become warm to hot when in use. Ensure
not to cover the adapter and keep it away from your body.