4GB FBD PC2-5300 2 x 2GB Dual Rank Kit
HPE 397413-B21, 4 GB, 2 x 2 GB, DDR2, 667 MHz, 240-pin DIMM
HPE 397413-B21. Internal memory: 4 GB, Memory layout (modules x size): 2 x 2 GB, Internal memory type: DDR2, Memory speed: 667 MHz, Memory form factor: 240-pin DIMM