Corsair 1GB (1x1GB) DDR 400 MHz (PC 3200) Laptop Memory (VS1GSDS400) Each memory module is individually tested to give you Peace of Mind that it Will Not Fail, Guaranteed! Online 24/7 Customer Support available at www.asktheramguy.com for your convenience and questions Corsair Memory is optimized for the Microsoft Windows Vista client operating system Lifetime Warranty! 1GB PC3200 400Mhz 200-pin Timing: 3-3-3-8