NewerTech NuMount Pivot Desk Mount for iMac and Apple Displays NewerTech NuMount Pivot Desk Mount - Desk Clamp Base and Desk Grommet Base - Assembly Hardware - Mounting Hardware - NewerTech 3 Year Limited Warranty Display Compatibility: Accommodates mid-2007 through mid-2009 24" iMac, Late 2009 through 2011 27" iMac24 & 27" Apple LED Cinema Displays27" Apple Thunderbolt Display Desk Mounting Configuration: Clamp or grommet mount Desktop Thickness Range: Up to 1.5" (3.8 cm) Orientation: Landscape or portrait