1F2168-568 Seagate Desktop HDD.15 4TB 5900RPM SATA 6Gbps 64MB Cache 3.5-inch Internal Hard Drive
ST4000NM0023 Seagate 4TB 3.5 inch SAS Server Enterprise Hard Drive
Amazon.com: Seagate 4 TB Expansion Amazon Special Edition USB 3.0 Portable External Hard Drive for PC, Xbox One and Playstation 4 (STGX4000400) : Electronics
Seagate Expansion 4TB USB 3.0 3.5" Desktop External Hard Drive - Newegg.com
Cheap Seagate ST4000NM0074 4TB 7.2K RPM SAS 12GBPS | Refurbished