Seagate BarraCuda 4TB 256MB Cache SATA lll 6Gb/s 3.5" Hard Drive HDD ST4000DM004 | eBay
Amazon.com: Seagate 4TB HDD 5.9K RPM 3.5" 6Gb/s SATA Hard Disk Drive Model: ST4000DM000 DP/N: VF3T3 : Electronics
Amazon.com: Seagate Portable 4TB External Hard Drive HDD – USB 3.0 for PC, Mac, Xbox, & PlayStation - 1-Year Rescue Service (STGX4000400) : Electronics