Lenovo ThinkStation P920 Tower Workstation - Manual (Page 18)

11 Ethernet connectors (2)
Connect an Ethernet cable for a local area network (LAN).
Note: To operate the computer within Federal Communications Commission (FCC) Class B limits, use a
Category 5 Ethernet cable.
12 PS/2 mouse connector
Use this connector to attach a PS/2 mouse, a trackball, or other pointing devices.
13 Audio line-in connector
The audio line-in connector is used to receive audio signals from an external audio device, such as a stereo
system. When you attach an external audio device, a cable connection is established between the audio line-
out connector of the device and the audio line-in connector of the computer.
6 P920 User Guide