This is a preowned Lot of 2 x 2GB 4GB MICRON Micro RAM MT4KTF25664HZ-IG6E2 1RX16 PC3L -12800S-11-13-C3

They are the Micron MT4KTF25664HZ-1G6E2 2GB Notebook SODIMM DDR3 PC12800(1600) UNBUF 1.35v 1RX16 204P 256MX64 256

Were used in an Apple MacBook Pro