A-Tech 4GB RAM Replacement for Samsung M471B5173QH0-YK0 | DDR3/DDR3L 1600MHz PC3L-12800 1Rx8 1.35V SODIMM 204-Pin Memory Module at Amazon.com
Nanya 4GB DDR3 Memory SO-DIMM 204pin PC3-12800S 1600MHz at Amazon.com
4GB Memory Module for QNAP TS-531X DDR3 PC3-12800 SODIMM RAM (PARTS-QUICK Brand) at Amazon.com
OWC 16.0GB (4 x 4GB) 1333MHz 204-Pin DDR3 SO-DIMM PC3-10600 CL9 Memory Compatible with iMac (OWC1333DDR3S16S) at Amazon.com
OWC 8 GB (2 X 4GB) ram PC8500 DDR3 1066MHz sodimm 204-pin Memory Upgrade Kit, (OWC8566DDR3S8GP), Compatible with MacBook Pro, MacBook, Mac Mini and iMac at Amazon.com
4GB PC10600 DDR3 1333MHz SO-DIMM Memory Compatible with 2011 MacBook Pro, Mid 2010/2011 21.5" & 27" iMac Models, 2011 Mac Mini (OWC1333DDR3S4GB) at Amazon.com