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
Kingston Technology 4GB 1333MHz DDR3 PC3-12800 Non ECC SODIMM Memory for Select Panasonic Notebooks M51264J90 at Amazon.com
OFFTEK 4GB Replacement Memory RAM Upgrade for HP-Compaq All-in-One 22-b013w (DDR3-12800) Desktop Memory at Amazon.com