Why You Can Trust CNET Xbox Series X's 1TB expandable storage costs $220
The Seagate drive is also compatible with Series S and is available to preorder at Best Buy.
External storage can expand your options for Xbox Series X (left) and Xbox Series S.
Adding 1TB of storage to your Xbox Series X or Series S will cost $220, as revealed by a Best Buy preorder page for Seagate's Game Drive. It will be available on Nov. 10, the day Microsoft's next-gen consoles come out.
The preorder page reveals that the card will slot into the back of Microsoft's consoles. The price was reported earlier Thursday by The Verge.
The $499 Series X comes with 1TB of internal storage, while the $299 Series S has 512GB -- so expanding the cheaper console's tight storage would actually make it more expensive than its bigger sibling. Since the Series S doesn't have an optical drive (while the Series X does), you'll be downloading all your games for the Series S and filling up that 512GB quickly.
Still, Xbox's Smart Delivery system means that games optimized for the new consoles won't take up as much space on the Series S as the Series X.
Microsoft didn't immediately respond to a request for comment about other manufacturers that may make external storage devices for its consoles.