8GB Memory for 2011 MacBook Pro, iMac, and Mac mini
Hewlett-Packard (HP) 716324-B21 - HP 24 GB (1x24GB) Three Rank x4 PC3L-10600R (DDR3-1333) Registered CAS-9 Low Voltage FIO Memory Kit - CPU Medics
Timetec Hynix IC 8GB KIT(2x4GB) Compatible for Apple DDR3 1333MHz PC3-10600 for Early/Late 2011 13/15/17 inch MacBook Pro, Mid 2010 Mid/Late 2011 21.5/27 inch iMac, Mid 2011 Mac Mini - Newegg.com
Amazon.com: Timetec 8GB KIT(2x4GB) Compatible for Apple DDR3 1333MHz PC3-10600 for Mac Book Pro (Early/Late 2011 13/15/17 inch), iMac (Mid 2010, Mid/Late 2011 21.5/27 inch), Mac Mini(Mid 2011) RAM Upgrade : Electronics
G.SKILL 4GB 204-PIN DDR3 SO-DIMM 1333 PC3-10600 LAPTOP MEMORY F3-10600CL9S-4GBSQ - The Rugged Store - Panasonic Toughbook and Toughpad
CORSAIR ValueSelect 4GB 240-Pin PC RAM DDR3 1333 Desktop Memory Model CMV4GX3M1A1333C9 - Newegg.com