A-Tech 8GB STICK Toshiba Toshiba Satellite C855D-S5351 C855D-S5353 C855D-S5354 C855D-S5357 C855D-S5359 C855D-S5900 C855D-S5950 C855D-SP5265FM SO-DIMM DDR3 NON-ECC PC3-12800 1600MHz RAM Memory 8GB STICK SO-DIMM DDR3 NON-ECC PC3-12800 1600MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Toshiba Toshiba Satellite. (See Compatibility List Below)