Compatibility - Quad monitor mount ideal for most screens up to 27" (not for three 27"curved monitors in horizontal position) and 22lbs each with 75x75mm or 100x100mm backside mounting holes. Fully aticulation - Rotate 360°, tilt ±90° up and down, swivel ±90° left and right (middle plates tilt ±45° up and down, swivel ±45° left and right), extra tall height adjustment along the center pole.