ST4000DM000 Seagate Desktop HDD.15 4TB 5900RPM SATA 6Gbps 64MB Cache 3.5-inch Internal Hard Drive
Seagate ST4000DM000, 1F2168-300 - Serverworlds
Amazon.com: Seagate Portable 4TB External Hard Drive HDD – USB 3.0 for PC, Mac, Xbox, & PlayStation - 1-Year Rescue Service (STGX4000400) : Electronics