RAMAXEL RMR5030EF68F9W-1600 8GB 2 x 4GB PC3-12800U DDR3 1600 Desktop Memory Kit at Amazon.com
HP 691740-001 4GB, 1600MHz, PC3L-12800 DDR3L DIMM memory module at Amazon .com
Crucial 4GB Single DDR3 1600 MT/s PC3-12800 CL11 Unbuffered UDIMM 240-Pin Desktop Memory Module CT51264BA160B at Amazon.com
Hynix HMT451S6AFR8A-PB 4GB PC3-12800 DDR3-1600MHz non-ECC Unbuffered CL11 204-Pin SoDimm 1.35V Low Voltage Single Rank Memory Module at Amazon.com
OWC 8GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Module Upgrade Compatible with iMac, Mac Mini, and MacBook Pro (OWC1600DDR3S8GB) at Amazon .com
OWC 8GB (2 x 4GB) 1867 MHZ DDR3 SO-DIMM PC3-14900 204 Pin CL11 Memory Upgrade (OWC1867DDR3S08S) at Amazon.com
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
Samsung 4GB DDR3 PC3-12800 1600MHz 204-Pin SODIMM Laptop Memory Module RAM. Model M471B5273DH0-CK0 at Amazon.com
Kingston 4GB 1RX8 PC3L-12800S-11-11-B3 HP16D3LS1KBG/4G DDR3 Laptop Memory at Amazon.com
SK Hynix 4GB HMT451S6AFR8A-PB DDR3 1Rx8 PC3L-12800S Laptop Memory at Amazon .com