HP A4923-69101 - 512MB ECC high-density SDRAM DIMM memory module - Must be installed in pairs of equal size (1024MB kit is A4923A) Retail
HP A5149-69101 - PCI Ultra2 Low Voltage Differential SCSI adaptor - Has one external Very High Density 68-pin connector (thumbscrews) and one internal High Density 68-pin connector (latch/clip) Retail