4 GB DDR3 SDRAM Memory Module 4 GB (1 x 4 GB) 1066MHz DDR31066/PC38500 DDR3 SDRAM SoDIMM KTL-TP1066/4G

Full Details on Amazon.com : http://www.amazon.com/gp/product/B001PS9UPM?tag=tsukuyomi-20

4 GB DDR3 SDRAM Memory Module 4 GB (1 x 4 GB) 1066MHz DDR31066/PC38500 DDR3 SDRAM SoDIMM KTL-TP1066/4G

Lenovo notebook