256MB, 533MHz, CL=4, PC2-4200 DDR2-SDRAM DIMM memory
HP 393392-001, 0.25 GB, DDR2, 533 MHz, 240-pin DIMM
HP 393392-001. Component for: PC/Server, Internal memory: 0.25 GB, Internal memory type: DDR2, Memory clock speed: 533 MHz, Memory form factor: 240-pin DIMM, CAS latency: 4