Apple Computer , iMac 21.5 inch 3.06 GHz Core i3 (i3-540), iMac 21.5 inch 3.2/3.6 GHz Core i5 (i5-680, i5-680), Order Number, MC508LL/A, MC509LL/A, BTO/CTO, Model Number, A1311, Model Year, Mid 2010, Part Name, Hard Drive 500GB (SATA) - 7200RPM, Manufacture Part Number, 607-3758, 825-7360, AR5BXB92, Compatible Apple Order Number, MB950LL/A, MC413LL/A, MB952LL/A, MB953LL/A, MC508LL/A, MC509LL/A, MC510LL/A, MC511LL/A, Compatible Apple Model Number, A1311, EMC Number, EMC 2389, EEE Code, N/A, Compatible Apple Computer, iMac (21.5-inch, Mid 2010), ,
Order you product here: 661-5516 Hard Drive 500GB (SATA) for iMac 21.5 inch Mid 2010 A1311 MC508LL/A, MC509LL/A, BTO/CTO, 661-5516
source http://info.applepartsellers.com/661-5516-hard-drive-500gb-sata-for-imac-21-5-inch-mid-2010-a1311-mc508ll-a-mc509ll-a-bto-cto