Qomo INTERACTIVE WHITEBOARD Owner's Manual page 12

Grey color frame with pen tray: In the frame of the board, prior to securing the
pen tray you will find a slot that accommodates a Kensington lock. If you
would like to use a Kensington lock insert and loop the cable through the
center hole on the frame, position the pen tray in line with the four screws,
and then screw the pen tray in place. (Shown below)
11