Kingston 4GB 1Rx8 PC3L-12800S TSB16D3LS1KBG/4G (Brand New) Kingston 4GB 1Rx8 PC3L-12800S TSB16D3LS1KBG/4G. 204-Pin DDR3 1600mHz (PC3 12800) SO-DIMM. Non ECC /	Unbuffered. Voltage: 1.35V. 30 Days Warranty