VESA 75 To 100 Adapter Plate
A 118 x 118 x 6 mm adapter plate that lets a VESA 75 x 75 monitor hang on a VESA 100 x 100 arm or wall mount: four 4.5 mm M4 clearance holes on the 100 mm square go to the arm, and four 4.5 mm holes on the 75 mm square are counterbored 9.5 mm x 4 mm deep so the monitor screw heads sit flush and never foul the arm head. A 56 mm centre window passes the video and power cables, and two 5 x 10 mm slots at the bottom edge take a zip tie or velcro strap for cable dressing.
desk vesa monitor-arm adapter