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ThinkPad X220 Ultrabase top view
1 The docking connector is used for attaching the ThinkPad computer to the ThinkPad X220 UltraBase.
2 The power jack is where you connect the AC adapter.
3 The Ethernet connector is for connecting the ThinkPad X220 UltraBase to a LAN.
4 The DisplayPort connector is for connecting a DisplayPort-compatible display device.
5 The Monitor connector is for attaching an external monitor or a projector to your computer.
6 The headphone jack, a jack 1/8 inch (3.5 mm) in diameter, is for connecting an external headphone.
7 The microphone jack, a jack 1/8 inch (3.5 mm) in diameter, is for connecting an external microphone.
8 The Universal Serial Bus (USB) connector is for connecting the devices that conform to the USB
interface.
9 The security keyhole is for locking the dock.
10 The system lock key is for locking the eject button.
11 The bay is for optical disk drive or second hard disk drive.
150 User Guide