Odyson - LCD Glass Panel Replacement for iMac 21.5" A1311 (Late 2009 - Late 2011) LCD Glass Panel for iMac 21.5" A1311 (Late 2009 - Late 2011) The glass panel adheres to the housing with magnets and protects the LCD screen This is the glass panel variant found in Mid/Late 2011 iMacs with two photo sensor holes near the iSight camera, making it backwards compatible with the Late 2009 and Mid 2010 iMac releases as well Compatibility: Compatible with all 21.5" iMacs w/ model A1311 Part Number: 922-9117, 922-9343, 922-9795, 810-3215, 810-3553, 830-3936