4GB PC3-8500 DDR3-1066 CL7 16c 256x8 204-pin SDRAM SODIMM. Genuine CMS brand, CMS is one of the most trusted names in the Computer Memory industry and this product carries a Lifetime Warranty from CMS Max Memory Compatible with CQ42-125LA Notebook (DDR3-1066MHz), CQ42-263TU (DDR3-1333MHz), CQ42-357TU Notebook (DDR3-1066MHz), CQ56-103TU Notebook (DDR3-1066MHz), CQ56-200SV (DDR3-1066MHz), CQ56-203LA Notebook (DDR3-1066MHz), CQ56-204LA Notebook (DDR3-1066MHz), CQ62-212TU Notebook, CQ62-211HE (DDR3-1333MHz), CQ62-213AX (DDR3-1333MHz), CQ62-214TU Notebook, CQ62-215TU Notebook, CQ62-226TU Notebook, CQ62-227TU Notebook, CQ62-228TU Notebook, CQ62-231NR (DDR3-1066MHz), CQ62-252TX Notebook (DDR3-1066MHz), CQ62-278TX Notebook, CQ62-280TX Notebook, CQ62-a22EO Notebook (DDR3-1066MHz), CQ62-a36SF (DDR3-1333MHz), G42-212BR (DDR3-1066MHz), G42-214BR (DDR3-1066MHz), G42-215BR (DDR3-1066MHz), G42-220BR (DDR3-1066MHz), G42-224CA (DDR3-1066MHz)