RAMAXEL 4GB LAPTOP RAM MEMORY 1Rx8 1.35v PC3L-12800S-11-13-B4 HF RMT3170MN68F9F-1600 RAMAXEL 4GB LAPTOP RAM MEMORY 1Rx8 1.35v PC3L-12800S-11-13-B4 HF RMT3170MN68F9F-1600