Kingston 1GB Toshiba Tecra M1 & S1 (KTT3614/1G) THIS KINGSTON KTT3614/1G 1GB MEMORY MODULE CAN REPLACE OR ADD TO YOUR SYSTEMS CURRENT RANDOM ACCESS MEMORY (RAM). MORE RAM WILL HELP PROGRAMS LOAD FASTER, RUN SMOOTHER, AND WILL GENERALLY IMPROVE SYSTEM PERFORMANCE.THIS MODULE WILL REQUIRE AN EMPTY RAM SLOT ON YOUR MOTHERBOARD. PLEASE Works with the following models: Toshiba NBTOSHPM1400, Toshiba Portege M100, Toshiba Portege R100 Toshiba PSA40U-001LFV, Toshiba PSA40U-06FV3V, Toshiba PSA40U-0F0Q4V, Toshiba PSP20U-1LKF3V