This is an LCD monitor adapter bracket. It mounts onto Onyx laptop mounts or any standard 1/4-20 crew thread. Simply attatch your LCD to adapter and screw the adapter onto Onyx mount. Use in compination with ACS-02 C-Clamp or ACS-03 Drill / Screw bracket. With this combo setup you can set the perfect height and angle of your LCD monitor as well as saving some space on your desktop.