VESA mounting interface standard requires M4 screws for template mounting of 75 x 75 or 100 x 100 mm. The holes on this tray are for 75x75 and 100x100mm patterns but the screws supplied are M5 sized. The screws didn't go through the holes on the VESA mounting plate I was planning to use the tray on. I installed it on another VESA mount that had a plate with large holes for M5 screws, but the mount doesn't rotate much. vertical. I would have to use it with the tablet about 60 degrees from horizontal. It doesn't fit like this, so I decided to return it.