Lenovo ThinkVision L151 User Manual page 8

2. Connect the analog signal cable to the video port on the back of the computer.
Note: One end of the signal cable is already pre-attached to your monitor.
3. Insert the power cord into the monitor, then plug the monitor power cord and the
computer cord into grounded electrical outlets.
4. Power on the monitor and the computer.
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L151 Flat Panel Monitor User's Guide