512MB, PC2-4200, DDR2-533MHz, ECC unbuffered memory module
HP 392293-001, 0.5 GB, DDR2, 533 MHz, 240-pin DIMM
HP 392293-001. Component for: PC/Server, Internal memory: 0.5 GB, Internal memory type: DDR2, Memory clock speed: 533 MHz, Memory form factor: 240-pin DIMM, ECC