HP A5531-69003 - 18GB hot-plug Ultra SCSI Low Voltage Differential (LVD) SCA hard drive - 10,000 RPM, low profile (Seagate ST318203LC) Retail
Hewlett-Packard (HP) A5531-67001 - 18GB 10k RPM 80-Pin SCSI 3.5" Hard Disk Drive (HDD) Sale $55.00 Retail $109.00