4GB Total consisting of 1pcs of 4GB 204p PC3-8500 CL7 8c 256x8 DDR3-1066 1Rx8 1.5V 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 Compatible with: Acer Aspire AS5252-V419 Max Memory 8GB Standard memory 2GB Sockets 2 Max Memory Per socket 4GB