Seagate 4TB 3.5" HDD-T4000-ST4000NM002401 Internal Enterprise Hard Drive
Seagate 4 TB Wired External Hard Disk Drive (HDD) - Seagate : Flipkart.com
ST4000NM0023 Seagate 4TB 3.5 inch SAS Server Enterprise Hard Drive
Amazon.com: SEAGATE Video HDD ST4000VM000 4TB 5900RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Hard Drive (Certified Refurbished)- w/1 Year Warranty : Electronics