VIVO Deluxe Gas Spring Mount Stand for Apple iMac 27" (late 2012+ slim updated) and all 21.5&rdquo; Displays (STAND-MAC2) COMPATIBILITY - Check compatibility! For iMac 27 displays (slim updated models from late 2012 to today) and all 21.5 iMac displays. GAS SPRING - Deluxe gas spring arm in order to provide easy movement and height adjustment without requiring the use of tools. MOTION - +90 degree to -35 degree screen tilt creates ideal viewing angles CABLE MANAGEMENT - Integrated internally and on back side to keep cords from becoming tangled MOUNTING MECHANISMS - Ultra heavy duty 4" C-clamp as well as option grommet mounting option