Full Details from Amazon.com : http://www.amazon.com/gp/product/B009H42WD8?tag=onigi-20
4GB RAM Memory for HP Pavilion Notebook g7-1077nr by Arch Memory
Arch Memory is a Registered Trademark of Arch Computer LLC
4GB 204-Pin DDR3 1333MHz SO-DIMM
Compatible with systems that use 204-Pin PC3-10600 SO-DIMM modules
4GB Memory for HP Pavilion Notebook g7-1077nr by Arch Memory
Lifetime Replacement Warranty