Timetec Hynix IC 16GB KIT(2x8GB) 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(16GB KIT(2x8GB)) - Newegg.com
Mac Pro Memory for Model 5.1 | DDR3 1333MHz | 4GB | MacMemory.com
Top Tier PC3-10600 SO-DIMM - 4GB DDR3 1333MHz | Sweetwater
Corsair CMSA8GX3M2A1333C9 Mac Memory, 8GB (2x4GB) DDR3 1333MHz SODIMM
Timetec Hynix IC 8GB Compatible for Apple DDR3 1333MHz PC3-10600 SODIMM Memory for Early/Late 2011 13/15/17 inch MacBook Pro, Mid 2010 and Mid/Late 2011 21.5/27 inch iMac, Mid 2011 Mac Mini (8GB) - Walmart.com
OWC 24.0GB (3 x 8GB) PC3-10600 DDR3 ECC-R 1333MHz... at MacSales.com
Amazon.com: Timetec 4GB Compatible for Apple DDR3 1333MHz PC3-10600 CL9 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) SODIMM MAC RAM Upgrade : Electronics