Western Digital Black WD4005FZBX 4 TB Hard Drive 3.5 Internal SATA SATA600 Desktop PC All in One PC Device Supported 7200rpm 5 Year Warranty - Office Depot
Seagate Barracuda Pro ST4000DM006 4 TB 3.5" Internal Hard Disk Drive (HDD) SATA III 6.0Gb/s 7200 RPM 128 MB | Fast Server Corp. www.srvfast.com