4GB STICK For Toshiba Satellite L Series L505-S5997 L505-S5999 L505-S6946 L505-S6951 L505-S6953 L505-S6954 L505-S6955 L505-S6956 L505-S6959 L505-S6962. SO-DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory. Genuine A-Tech Brand. 4GB STICK SO-DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Toshiba Satellite L Series. (See Compatibility List Below)