4 GB, DDR3 SDRAM, 1333 MHz
HPE 619488-B21, 4 GB, 1 x 4 GB, DDR3, 1333 MHz
HPE 619488-B21. Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR3, Memory clock speed: 1333 MHz