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WD_Black C50 Expansion Card for Xbox Series X/S hands-on: tiny but oh so useful

The WD_Black C50 is the first alternative to Seagate's expensive Xbox storage expansion. Here are our initial thoughts after getting our hands on one.

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Ever since we wrote about the WD_Black C50 Expansion Card for Xbox Series X and S at the start of June, we’ve found the actual device a little illusive. It has proved to be hard to come by in the UK.

However, while visiting an event in London recently, we caught up with a representative from Western Digital who just so happened to have one on display. So we finally got to hold one for the first time.

Admittedly, we couldn’t see it in action, but as it works in exactly the same way as the Seagate alternative – which we use in our own Xbox Series X – we were more interested in the aesthetic and how easy it is to slot into the machine. Oh, and we asked how UK and US customers can get one, apart from through Western Digital’s own webstore.

Where can you buy the WD_Black C50 Storage Expansion Card?

It turns out that UK customers can currently buy the 1TB WD_Black C50 from Argos, priced at £149.99. It’s also available in the US via for $149.99.

1TB WD_Black C50 Storage Expansion Card for Xbox Series X/S

Expand your Xbox Series X or Series S storage by a massive 1TB. You just plug the WD_Black C50 Card into the dedicated slot on the back of your console.

There’s a 512GB version that’s available too (for $79.99 / £89.99 respectively), but we highly recommend the 1TB card for that extra storage for the cash.

What’s the WD_Black C50 like?

As we’ve said, we didn’t get to test the storage itself, but the card is better in the hand than the Seagate rival.

We particularly like the little hook design on the bottom, which makes it easier to pull back out of the console when needed. It’s also solid and fits tightly into the dedicated slow, whether you’re using it on an Xbox Series S (as in the pictures) or Xbox Series X.

You can see it without its case in our shots, although the WD_Black C50 does come with a small protective cap for when the card is not in use.

In terms of specifications, the card is 25g and runs at the exact same speed as the SSD inside the Xbox Series X/S – reading and writing up to 2.4GB/s of data thanks to the Xbox Velocity Architecture.

Certainly, we’ve never noticed any difference in game loading times or asset pulling whether it was installed on the internal drive or the Seagate 1TB Expansion Card we have. The Western Digital version adheres to the exact same standard set by Xbox.

We’re hoping to actually try the WD_Black C50 Storage Expansion Card in our own Xbox consoles soon. We’ll bring you more on its performance then.

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Rik Henderson
Rik Henderson
Rik is a professional journalist with more than 35 years experience across online, magazines and television broadcasting. As well as the creator of GamesLifer, he is the News Editor of, while his previous work includes stints as editor and group editor on several monthlies and weeklies covering video games and technology. He has also been a series producer on daily and weekly TV shows, and has presented and guested on multiple TV series too, including GamesMaster, Games World, Game Over, Virtual World of Sport, Live TV, Greatest Christmas TV Ads, and The Apprentice.