2PC OF 8GB DDR3L, 1600MHz, Non-ECC, CL11, X8, 1.35V, Unbuffered, SODIMM, 204-pin 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: Lenovo ThinkCentre M73z 10BBxxx; 10BCxxx Maximum Memory: 8GB Memory Technology: DDR3 SDRAM Memory Standard: DDR3-12800 Number of Total Memory Slots: 2