Memory Size 4 GB Memory Technology DDR3 SDRAM Number of Modules 1 x 4 GB Memory Speed 1333 MHz Memory Standard DDR3-1333/PC3-10600 Weight Approximate 0.16 oz Compatibility Lenovo Devices ThinkCentre Edge 71z ThinkCentre Edge 91z ThinkCentre M58 6139, 7187, 7348, 7359, 7637, 8820 ThinkCentre M58p 6136, 7345, 7356, 7479, 7629, 9961 ThinkCentre M70z ThinkCentre M71z ThinkCentre M90 3025, 3034, 3131, 3142, 3307, 3356, 3467, 3557, 3692, 4394, 5092, 5226 ThinkCentre M90p 3034, 3131, 3142, 3257, 3307, 3356, 3467, 3557, 3853, 4394, 5092, 5226, 5296 ThinkCentre M90z ThinkCentre M91 2491, 7516, 7519 ThinkCentre M91p 0266, 0384, 4168, 5067, 7516 ThinkPad Edge 11 ThinkPad Edge 13 0196, 0217, 0221, 0492 ThinkPad Edge 14 ThinkPad Edge 15 ThinkPad Edge E120 ThinkPad Edge E125 ThinkPad Edge E220s ThinkPad Edge E320 ThinkPad Edge E325 ThinkPad Edge E420 ThinkPad Edge E420s ThinkPad Edge E425 ThinkPad Edge E520 ThinkPad Edge E525 ThinkPad L410 ThinkPad L412 ThinkPad L420 ThinkPad L510 ThinkPad L512 ThinkPad L520 ThinkPad SL410 ThinkPad SL510 ThinkPad T410 ThinkPad T410i ThinkPad T410s ThinkPad T410si ThinkPad T420 ThinkPad T420i ThinkPad T420s ThinkPad T420si ThinkPad T510 ThinkPad T510i ThinkPad T520 ThinkPad T520i ThinkPad W510 ThinkPad W520 ThinkPad W701 ThinkPad W701ds ThinkPad X1 ThinkPad X121e ThinkPad X130e ThinkPad X200s ThinkPad X201 ThinkPad X201 Tablet ThinkPad X201i ThinkPad X201i Tablet ThinkPad X201s ThinkPad X220 ThinkPad X220 Tablet ThinkPad X220i ThinkPad X220i Tablet Limited Warranty Lifetime