PC3-12800 DDR3-1600 SODIMM memory offerings let you upgrade your system&s standard memory capacity to improve overall Think Pad or Think Centre system performance Adding additional memory is a cost-effective way to help boost your system&s performance & enhance its ability to run more programs simultaneously Features Lenovo memory module 4GB PC3-12800 (1600 M Hz) DDR3 memory UDIMM memory package Test-proven 100 compatibility listed for supported systems Meets stringent Lenovo reliability standards for memory products Barcode 887037119093 Bus IO Configuration Non Parity Designation PC3-12800 Error Correction Non ECC Form Factor Memory Module