Amazon.com: Seagate 500GB Desktop HDD SATA 6Gb/s 16MB Cache 3.5-Inch Internal Bare Drive (ST500DM002) (Renewed) : Electronics
Toshiba P000195240 - 500MB IDE 3.5" Hard Disk Drive (HDD) - CPU Medics
Western Digital 500 GB WD Black SATA III 7200 RPM 32 MB Cache Bulk/OEM Desktop Hard Drive : Electronics - Amazon.com
P000195240 Toshiba 500MB ATA/IDE 2.5-inch Internal Hard Drive
Conner 500 MB,Internal,3600 RPM,3.5" (CFS541A) Hard Drive for sale online | eBay
Quantum 500MB FRBLA 655-0232 ML5330J43FEA Hard Drive HDD from NEC Ready 466D | eBay
Amazon.com: Western Digital Blue WD5000AZLX 500GB 7200RPM 32MB Cache SATA III 6.0Gb/s 3.5in Internal Desktop Hard Drive [Renewed]- w/ 1 Year Warranty : Electronics
Western Digital Black Mobile Hard Drive 500MB 2.5" – Jamm21
WD WD5000LPLX Black 500 GB 2.5" SATA 32 MB 7200 RPM Hard Drive | SabrePC
WD RE WD5003ABYZ - Hard drive - 500 GB - internal - 3.5-inch - SATA 6Gb/s - 7200 rpm - buffer: 64 MB | Dell USA
Amazon.com: Western Digital 500 GB AV-25 SATA 3 Gb/s 5400 32 MB Cache Bulk/OEM AV Hard Drive- WD5000BUDT : Electronics