Apple Computer , iMac 21.5 inch 3.2/3.06 GHz Core i3 (i3-540), iMac 21.5 inch 3.06 GHz Core i5 (i5-680),
Order Number, MC508LL/A, MC509LL/A, BTO/CTO,
Model Number, A1311,
Model Year, Mid 2010,
Part Name, Airport Antenna,
Manufacture Part Number, N/A,
Compatible Apple Order Number, MC508LL/A, MC509LL/A, BTO/CTO,
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:
922-9373 Airport Antenna for iMac 21.5-inch Mid 2010 A1311 MC508LL/A, MC509LL/A, BTO/CTO,
922-9373
source
http://info.applepartsellers.com/922-9373-airport-antenna-for-imac-21-5-inch-mid-2010-a1311-mc508ll-a-mc509ll-a-bto-cto