Reviewing System Features 1-9Rear featuresA – PS/2 Mouse Port F – VGA ConnectorB – Kensington Lock Slot G – LAN ConnectorC – PS/2 Keyboard Port H – USB ConnectorsD – Printer Port I – DC Power ConnectorE – Serial PortUniversal Serial Bus PortsThe system unit comes with two USB ports on the rear of the system unit.The ports allow you to easily and conveniently add plug and play USBdevices without opening up the system. You simply plug the USB deviceinto a port. You can connect up to 127 USB devices including a keyboard,mouse, monitor, printer, scanner, or speaker set.DC Power ConnectorThe system operates with DC power supplied from the AC power adapter.The adapter plugs into an AC power source and the DC power connectoron the rear of the system unit. The AC power adapter uses a standard115-Vac or 230-Vac grounded power source.