OWC 4.0GB (2X 2GB) 1333MHz DDR3 SO-DIMM PC3-10600 204Pin SO-DIMM CL9 Memory RAM Upgrade Module for iMac, Mac Mini, MacBook Pro and PC laptops (OWC1333DDR3S04S) at Amazon.com
2X DDR3 2GB Ram 1333 Mhz For Desktop PC Memory 240Pin 1.5V New Dimm - AliExpress