Samsung M378B5173EB0-YK0 4GB PC3L-12800U DDR3-1600MHz Memory,HMT451U6BFR8A-PB, K531R8-HYAS1K0RP, RMR5030EF68F9W-1600
Samsung M378B5173EB0-YK0 4GB DDR3-1600/PC3-12800 UDIMM 240-Pin CL11 Single Rank x8 Non-ECC Unbuffered Memory Module

Samsung M378B5173EB0-YK0 4GB PC3L-12800U DDR3-1600MHz Memory,HMT451U6BFR8A-PB, K531R8-HYAS1K0RP, RMR5030EF68F9W-1600
Samsung M378B5173EB0-YK0 4GB DDR3-1600/PC3-12800 UDIMM 240-Pin CL11 Single Rank x8 Non-ECC Unbuffered Memory Module