922-7821 A1200 iMac 24 inch 2.16-2.33GHz - Shield, IR-ALS Board NB-3355W
This is the IR/ALS Shield for the 24" iMac.
Apple part number: 922-7821
Compatible models: A1200-MA456LL-White, A1200-CTO-White,
Compatible Mac info. : 24-inch 2.16GHz Intel Core 2 Duo iMac , 24-inch 2.33GHz Intel Core 2 Duo iMac
922-7821 A1200 iMac 24 inch 2.16-2.33GHz - Shield, IR-ALS Board