Lenovo ThinkPad T550 User Manual page 62

Rear view
1
Always On USB connector: Used to connect devices that are compatible with USB 2.0 or charge some
mobile digital devices and smartphones when your computer is in sleep or hibernation mode.
2 USB 2.0 connectors: Used to connect devices that are compatible with USB 2.0.
3
USB 3.0 connectors: Used to connect devices that are compatible with USB 3.0.
4 Ethernet connector: Used to connect the docking station to an Ethernet LAN.
Note: If you need to use an Ethernet connector or an external monitor connector when your computer is
attached to a docking station, use the Ethernet connector or the external monitor connector on the docking
station, instead of the one on the computer.
5 ac power connector: Used to connect the ac power adapter.
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6 DisplayPort connector: Used to attach a high-performance monitor, a direct-drive monitor, or other
devices that use a DisplayPort connector.
7 DVI connector: Used to connect a display that supports Digital Visual Interface (DVI) connection.
To connect a DVI display, do the following:
1. Ensure that the computer is connected to the docking station and works properly.
2. Turn off the computer.
3. Connect the DVI display to the DVI connector on the docking station, and then connect the display
to an electrical outlet.
4. Turn on the DVI display.
5. Turn on the computer.
Note: Turn on the DVI display before you turn on the computer. Otherwise the system cannot recognize
that the display is connected.
8
VGA connector: Used to connect the computer to a VGA-compatible video device, such as a VGA
monitor.
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User Guide