Xbox Series X and Xbox Series S both support expanded storage for playing next-gen games, which the PS5 does not, but doing so requires a proprietary storage card. Right now, that Seagate Storage Expansion Card for Xbox Series X|S is on sale at Newegg, giving you more than $20 off its regular price so you can install even more games. It’s the only one that works right now, so you’ll rarely find a better deal.
To take advantage of the 10% discount, all you have to do is enter the promo code 93XQY65 in the code field during checkout. This will give you the discount, which drops the price down to $198. Though that is still nothing to sneeze at, the card is the only one that supports direct play of Xbox Series X|S games other than the consoles’ own internal storage. Currently, other external drives, including other SSDs, only support storing these games, and they must be transferred to the internal drive to play.