Apple Computer , iMac 21.5-inch 3.06/3.33 GHz Core 2 Duo (E7600, E8600), iMac 21.5-inch 3.2/3.06 GHz Core i3 (i3-540, i3-550), iMac 21.5-inch 3.06 GHz Core i5 (i5-680),
Order Number, MB950LL/A, MC508LL/A, MC509LL/A, BTO/CTO,
Model Number, A1311,
Part Name, Speaker (Left),
Manufacture Part Number, N/A,
EMC Number, EMC 2308, EMC 2389,
EEE Code, N/A,
Compatible Apple Computer, iMac (21.5-inch, Late 2009), iMac (21.5-inch, Mid 2010), ,
Order you product here:
922-9123 Speaker (Left) for iMac 21.5 inch A1311 MB950LL/A, MC508LL/A, MC509LL/A, BTO/CTO,
922-9123
source
http://blogs.applepartsellers.com/922-9123-speaker-left-for-imac-21-5-inch-a1311-mb950ll-a-mc508ll-a-mc509ll-a-bto-cto.html