Arch Memory 4GB 204-Pin DDR3 1066 MHz So-dimm RAM for Lenovo ThinkPad SL510 2875 Series at Amazon.com
2GB Stick for IBM Lenovo ThinkPad S Series SL410 2874-xxx SL510 2875-xxx. SO-DIMM DDR3 Non-ECC PC3-8500 1066MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com