4GB Memory (PC3-8500, DDR3-1066MHz, 1.5v) for Dell Precision Mobile Workstation M6400 OEM Part # equivalent: A2038272, A2058521, A2884835, A3198148, A3414617, A3583288, A3721488, A3721489, A3721509, A3721510, A3721516, A3761099, A3761100, A3761102, KTD-L3A/4G |