Arch Memory Certified for Lenovo 8 GB (1 x 8 GB) 240-Pin DDR3L-1600 PC3-12800 UDIMM RAM Arch Memory is a Registered Trademark of Arch Computer, LLC Works in all Lenovo computers that support this specific speed and capacity. If unsure, please contact us; we can verify it when you provide us your make and model computer. 240 pin SDRAM UDIMM DDR3L RAM Upgrade Limited, Lifetime Warranty through the Seller