SK Hynix HMT451S6DFR8A 8GB (2x4GB) 1Rx8 DDR3 SO-DIMM PC3L-12800S 1600MHz 204-Pin Non-ECC CL11 1.35V Laptop Memory 2-Piece Kit HMT451S6DFR8A-PB for Other Laptop Systems at Amazon.com
SK Hynix 4GB 1Rx8 PC3L-12800R DDR3-1600MHz ECC Reg Server RAM HMT451R7AFR8A-PB
For SK Hynix 4GB 1RX8 DDR3L 1600MHz PC3L-12800S CL11 SODIMM Laptop RAM Memory #N | eBay
Amazon.com: SK Hynix 4GB 2RX8 PC3-12800E 1600MHZ HMT351U7CFR8C-PB 00D4957 00D4955 47J0180 Compatible with IBM System x3100 M4 IBM System x3250 M4 : Electronics