Lenovo ThinkVision LT1712p Monitor - Manual (Page 7)

Remove the cable manager and put the monitor flat on the desk
．
2> Insert the L bracket to the base metal plate；
3> Tighten the quick release screw with L bracket；Fix U chip on the L bracket.
Chapter 1. Getting started 1-3
1> Press the monitor head and remove the fixed chip
ａ nd main clip ;
Lift the monitor head to the highest location.
Insert L bracket lenovo concerned (option function)