If you're looking to add some more storage to your Xbox One S, you really can't go wrong with the Western Digital 4TB external hard drive.

Best overall

WD 4TB My Book

WD 4TB My Book

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Western Digital's My Book series is a solid performer when it comes to external hard drives. We found the 4TB option struck the ideal balance between storage capacity and affordability. While it's adding another $100 to the Xbox One, the 4TB of storage will ensure you'll be bolstering the game collection for many months to come.

Bottom line: The WD My Book offers great value, reliability, portability and capacity.

One more thing: Can also be purchased in 6TB and 8TB variants as well as double HDD configurations.

Why the WD 4TB My Book is the best external hard drive for Xbox One S

We found the WD My Book series, specifically the 4TB variant, to offer the best in value, storage space and reliability when it comes to adding an external drive to your Xbox One S.

Not only are you investing in a quality brand, Western Digital, when it comes to storing data, but the price of the company's My Book line of external enclosures are incredibly competitive. Some purchasers have even found the drives contained within the be priced more as standalone units than inside the My Book protective casing, so you know you're getting a solid deal for the Xbox One S.

With games becoming more complex and sizes hitting insane numbers for downloads, it makes sense to pick up an external drive to offset some of the burden since the Xbox One S only comes with either 500GB, 1TB or 2TB of internal space, which simply isn't enough in 2016. Throw in a 4TB Western Digital My Book and you now have up to 5TB of storage space.

The My Book itself is essentially a WD drive plugged into a daughter circuit board, which then runs via USB to the Xbox One S. That's pretty much it, aside from the protective plastic casing, of course. No thrills, no cool LED lighting, but when all you require the drive to do is spin up with the Xbox and store titles, that's pretty much all you could ever need in an external drive.

WD offers the My Book series in 2TB, 3TB, 4TB, 6TB, 8TB, 12TB, and 16TB configurations. The latter two options are dual-drives, sporting larger cases with two drives inside.

How to choose and use external drives with Xbox One

Speedy SSD

Samsung 1TB 850 Pro

Samsung 850 Pro

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Buying an SSD with large capacities, even in 2016, is generally considered a bad idea. Newer SSD solutions are becoming more affordable, but 1TB variants and above are still hundreds of dollars. Should you have the funds available and want to take full advantage of increased read and write speeds of SSDs over traditional hard drives with games, the Samsung 850 Pro series is the best of the best.

Bottom line: Expensive, reliable, and super quick. Adding an external SSD to the Xbox One S will increase game load times.

One more thing: You'll need an external enclosure for internal drives like the Samsung 850 Pro. An example would be this unit from Inateck.

Affordable HDD

WD 1TB My Passport

WD 1TB My Passport

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Should you not require TBs of extra space, but want a portable drive you can take with you to various LAN events and Xbox parties, the My Passport family of drives are worth looking into.

Bottom line: More affordable than other options, but comes with substantially lower capacity. You'll be effectively doubling the storage available.

One more thing: You have a choice of some bold colors to bring the Xbox One and surrounding furniture to life.

Conclusion

While you cannot go wrong when it comes to external hard drives, especially if you have a few units lying around and simply need to purchase an enclosure, we believe the best option for the Xbox One S is the WD 4TB My Book. Not only does it add an insane amount of storage to the console, but also offers great reliability and portability too.

Best overall

WD 4TB My Book

WD 4TB My Book

See at Amazon

Western Digital's My Book series is a solid performer when it comes to external hard drives. We found the 4TB option struck the ideal balance between storage capacity and affordability. While it's adding another $100 to the Xbox One, the 4TB of storage will ensure you'll be bolstering the game collection for many months to come. And since the company's My Book series use traditional mechanical drives, you'll not be paying a fortune.

Bottom line: The WD My Book offers great value, reliability, portability and capacity.

One more thing: Can also be purchased in 6TB and 8TB variants as well as double HDD configurations.