With 4 TB of storage, this is a good hard drive if you need a larger storage unit. The form factor of this hard drive is 3.5".
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4TB Seagate Barracuda 3.5 inch SATA 3 6GB/s 5400rpm 256MB Cache 8ms Internal Hard Drive - OEM
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Seagate BarraCuda 4TB 3.5" SATA HDD/Hard Disk Drive