A-TECH 2GB STICK For Sony VAIO VPCSE190X CTO VPCSE1CGX/B VPCSE1DGX/B VPCYB15AL VPCZ215GL VPCZ2190X CTO VPCZ21M9E VPCZ21V9E. SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory. Genuine Brand. 2GB STICK SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Sony VAIO. (See Compatibility List Below)