Lenovo THINKSTATION 4155 - Manual (Page 14)

2. Connect the USB mouse cable to the USB connector.
3. Connect the monitor cable to the monitor connector.
Note: Depending on your model type, your computer might come with a Low
Force Helix (LFH) connector on the rear panel, which enables you to
connect up to four monitors. The standard LFH connector has two
breakout Video Graphics Array (VGA) cables or Digital Video Interface
(DVI) cables. This solution provides you with flexibility for a variety of
monitor configurations. To use the LFH connector, your computer must
have a graphics card with multi-monitor capabilities. Connect the
breakout cables to the LFH connector as shown, then connect the VGA
or DVI cables to the breakout cables.
6 User Guide