The reason why I only gave it a four stars instead of a five stars review because when I firstly got it and plugged it in, it basically only has 3.63 TB of space...not exactly 4TB. It already had some stuff inside the drive that wasted some storage space. If you see the attached photo, then you can see there were stuff in the drive that already wasted some storage space.

these things are only good because they have been dropping in price. i got mine for under $100 but i wanna say $80. the last one i got from seagate 1TB ($90 back in 2013) stopped working after dropping it from the top of my computer case to the carpetted floor on which the computer was set. these are very fragile and the only thing it is good for is its portability and relatively small size. wish i didnt have to buy another one but the price was too good. otherwise i would just buy my own usb3 to 2.5" sata case (10 dollars) and buy my own 2.55 hdd(market price), which is essentially all it is. its just pre formatted and partitioned for plug and play (for the priviledged ;p) with some software to waste your space. speed is stuck at ~40 megabytes per second which is more or less industry average for these puppies. such a wasted technology: usb3 and sata 3.0

4TB in a compact, lightweight, sturdy package. Excellent for backups or extra storage. Great price. It's a downrev device in that it achieves USB 3.0 on the drive side by using micro USB plus that funky extra connector. But since the needed cable is included, who cares? Sure, USB C would be better, and give me more cable flexibility, but would also cost more. This gets the job done, and that's all I need.

The Seagate - Backup Plus 4TB External USB 3.0 Portable Hard Drive is excellent. This unit is small and compact and works well with my new Dell Computer, Windows 10 64 BIT OS. I like the fact you just plug the USB 3.0 into your computer and you are ready to backup everything. If you need a good backup, I would highly recommend a Seagate Portable Hard Drive.

I’ve been using these hard drives for several years and found them to be very reliable. I like the fact that they are small in size, don’t require an external charging cable and I can stack them on top of each other to keep my limited amount of space organized.