HP 598697-001 - 320GB SATA hard disk drive - 7,200 RPM, 2.5-inch form factor, 9.5mm height - Includes bracket Part 598697-001 634920-002 Retail
HP 577988-001 - 250GB Serial-ATA hard drive - 7,200 RPM - 9.5mm, 2.5-inch form factor - Includes hard drive bracket Part 577988-001 603783-001 Retail
HP 486261-001 - 250GB Serial-ATA hard drive - 5,400 RPM - 9.5mm, 2.5-inch form factor - Includes hard drive bracket Part 486261-001 603783-001 Retail
HP 613355-001 - 500GB SATA hard disc drive - 7,200 RPM, 2.5-inch form factor, 9.5mm height - Includes bracket Part 613355-001 634919-001 Retail
