This is a mechanical HDD drive with a 4,000 GB storage capacity. If you happen to be looking for an internal hard drive, this could be just the thing.
From Amazon
Seagate WAVE - Seag 4TB ST4000VX007 SA3 | SkyHawk
EE Store
Seagate 4TB SkyHawk 3.5 SATA 6Gb/s 64MB Surveillance Hard Drive
AA2Z Supply
SEAGATE ST4000VX007 SKYHAWK SURVEILLANCE 4TB 7200RPM SATA-6GBPS 64MB BUFFER 3.5INCH INTERNAL HARD DISK DRIVE. BULK. .