With 4 TB of storage, this is a good HDD drive if you need a larger storage unit. The form factor is 2.5" which apart from this model is commonly used in SSD drives.
From Amazon
Seagate One Touch, 4TB, Portable External Hard Drive, PC Notebook & Mac USB 3.0, Black, 1 year MylioCreate, 4 mo Adobe Creative Cloud Photography, 2 year Rescue Services (STKC4000400)
Clove Technology
Seagate One Touch External HDD 4000 GB Blue
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