4GB DDR3, 240-pin DIMM, 1600MHz, Unregistered (unbuffered)
Micron MT18KSF51272AZ-1G6K1ZE, 4 GB, DDR3, 1600 MHz, 240-pin DIMM
Micron MT18KSF51272AZ-1G6K1ZE. Internal memory: 4 GB, Internal memory type: DDR3, Memory clock speed: 1600 MHz, Memory form factor: 240-pin DIMM, ECC