ADATA Premier DDR3 1600MHz 4GB Laptop Memory Modules (AD3S1600W4G11-S) at Amazon.com
1GB PC3-10600 DDR3-1333MHz 204-Pin SODIMM Laptop Memory Module AD73I1A0873EU Compatible Replacement Spare Part for Adata Compatible and Other Systems at Amazon.com
ADATA 4GB DDR3 1600 CL11 AM1L16BC4R1-B1PS PC3L-12800S-11 at Amazon.com