How to expand Xbox Series X, Series S storage with an external drive

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Seagate Storage Expansion Card for Xbox Series X, Series SSource: Microsoft

The Xbox Series X and Xbox Series S introduce significant gains in storage, adopting custom solid-state drives (SSDs), poised to cut back loading screens to a minimum. Microsoft positions that high-speed fundamental to its next-generation vision, also introducing changes to storage. With that comes the arrival of a proprietary memory card-style SSD, while USB external hard drives take a backseat for backward compatibility. Here’s what you need to know about your available storage options on Xbox Series X and Xbox Series S, and what each entails.

Products used in this guide

Expanding Xbox Series X, Series S storage: The TLDR

Xbox Series X, Xbox Series S

Source: Microsoft

Xbox Series X and Xbox Series S pack shared custom NVMe SSD storage technology, bringing up to 40 times speed increases over the Xbox One family. The Xbox Series X ships with a 1TB internal SSD drive, while the Xbox Series S features a reduced 512GB capacity out of the box. In reality, Xbox Series X has just 802GB of space usable for games, with Xbox Series S offering just 364GB.

When your games library eventually fills the internal drive, Microsoft provides two primary routes to increase your available storage on Xbox Series X, and Xbox Series S. It worked with Seagate on an SSD expansion card, mimicking the internal SSD with identical performance. It also supports USB hard drives like Xbox One consoles, although this time with limitations attributed to slower speeds.

In brief — the list of Xbox Series X and Series S Optimized games needs high-speed storage, and only the internal SSD or official expansion card can deliver. While USB hard drives work fine, they only store those games, and you will need to transfer them to the SSD to play. However, backward compatible titles, including Xbox 360 and original Xbox games, work fine on USB drives. Here’s a handy breakdown of how USB drives compare to the SSD expansion card.

Internal SSD Seagate Expansion Card USB external drive
Xbox Series X/S games Storage only
Xbox One games (upgraded) Storage only
Xbox One games (not upgraded)
Xbox 360 games
Original Xbox games

The challenges around storage space only grow for Xbox Series X and Xbox Series S, with top titles larger than ever. The latest blockbusters often surpass 100GB, with the added increased capabilities of the latest consoles unlikely to reverse that trend. While Microsoft states that on average, Xbox Series S titles should clock in 30 percent smaller than Xbox Series X, storage is far from plentiful on either device.

Xbox Series X, Series S Seagate Expansion Card

Xbox Series X Storage Expansion

Source: Microsoft

With Xbox Series X and Series S focused on processing capabilities and speed, games designed for the consoles require the full bandwidth of its custom storage technologies. Traditional USB devices fail to hit the mark, which led Microsoft to pursue a custom expansion card. The first compatible card comes in partnership with Seagate, providing an external SSD that exactly matches the internal drive. In short, it’s a fast proprietary memory card to expand your storage, guaranteed to meet the standards for Xbox Series X and Xbox Series S.

The cards come in only slightly larger than your average USB thumb drive, with a sliding cover for safekeeping. They connect via a dedicated rear port on either console, which hooks up directly to the processor. That provides cutting-edge speeds, but the PCIe 4.0 tech used is also notoriously costly, driving up the RRP. Other third-party manufacturers are also expected to launch expansion cards at a later date, although Seagate delivers the first and only solution that meets this standard in 2020.

The Seagate Storage Expansion Card for Xbox Series X and Xbox Series S targets enthusiasts demanding the best, exactly matching Microsoft’s baked-in solution. It guarantees the best from your titles across internal and external storage, if you can take the hit.

How to use the Xbox Seagate SSD Expansion Card

Xbox Series S SSD Expansion Port

Xbox Series X and Xbox Series S both feature a dedicated “Expansion Port” to accommodate the Seagate’s official SSD expansion card.Source: Microsoft

The Seagate Storage Expansion Card connects to Xbox Series X and Series S via a dedicated, proprietary connector on the console’s rear. The rectangular port sits adjacent to the HDMI output on both consoles, labeled with “EXPANSION PORT.” Upon removing the included plastic cover, the SSD slides into the port, slightly protruding from the back I/O panel.

Microsoft allows external SSD cards to be inserted with the console turned on, enabling those with multiple expansion cards to hot-swap on the fly. When inserted, the Xbox Series X or Xbox Series S will automatically recognize and configure your external storage. Expect a full step-by-step breakdown once both consoles hit the market.

Where to buy Xbox Series X, Series S Seagate Expansion Card: Price and size

The Seagate Storage Expansion Card for Xbox, as expected, is more than your everyday hard drive. It costs $220 in the U.S. for the 1TB model, which fell in line with our previous predictions, given the average pricing for current PCIe 4.0 SSDs. That translates to £220 in the UK, $300 in Canada, or €270 in Europe. While undeniably a premium device, it’s a result of the bleeding-edge console hardware.

Expand your Xbox



Seagate Expansion Card for Xbox Series X|S

Powerful storage comes in a small package.

Microsoft and Seagate have teamed up on a compact expansion card for Xbox Series X and S consoles. It leverages the same custom SSD technology seen inside both devices, as the only expandable storage solution capable of playing next-generation games.

Does Xbox Series X, Series S support USB external hard drives?

Xbox One Hard Drive

Source: Matt Brown | Windows Central

Microsoft supports almost all Xbox One accessories with Xbox Series X and Series S, extending to the existing storage ecosystem. That guarantees partial compatibility for external hard drives from the Xbox One era via USB connectivity. It makes them an ideal, budget-friendly alternative to the official Seagate Storage Expansion Card, especially when offloading titles from the internal drive.

However, USB drives don’t match Microsoft’s custom SSD speed, imposing significant limitations on their capabilities. Xbox One, Xbox 360, and original Xbox titles all run on an external USB hard drive with Xbox Series X and Xbox Series S. And provided previous-generation software doesn’t receive Xbox Series-geared upgrades, it also runs on USB storage.

But Xbox Series X and Series S titles won’t run on external hard drives due to slow transfer speeds, failing to meet next-generation demands. For upcoming releases or older games updated for Xbox Series X or Series S, the internal SSD or an external expansion card is required.

But with the high price of the SSD expansion card, it’s worth stressing that all Xbox Series X and Series S titles can be offloaded to an external USB hard drive. While some titles may not be playable from the slower storage, it’s still possible to shift data between an SSD where your games can be playable, and a USB for storage. The transfer speeds of your USB hard drive will determine how fast they move back and forth, but it’s a useful way to cycle games from the internal SSD without investing in the $220 expansion card.

How to use a USB external hard drive with Xbox Series X, Series S

The Xbox Series X and Series S both feature USB-A ports, making it important to check an external hard drive uses the correct connector to hook up to the console. The two consoles each feature twin rear-facing USB-A ports, ideal for hiding external hard drives, with an additional port upfront.

When connecting a USB external drive, your Xbox console will automatically detect external storage, with on-screen prompts to ease the setup process. You’ll also need to permit your console to format the drive, losing all data currently stored onboard.

Best Xbox Series X, Series S external hard drives

Samsung T7

Source: Richard Devine / Windows Central

If the SSD Expansion Card isn’t for you, a vibrant ecosystem of USB-connected hard drives will meet demands for Xbox One, Xbox 360, and original Xbox titles. These storage solutions all function with Xbox One today, multiplying the capacity of your console, with plug-and-play access also guaranteed for Xbox Series X at launch.

The best cheap Xbox One hard drives start as affordable as a video game, with Western Digital offering a range of reliable storage within performance demands. That 1TB expansion can triple your room across some consoles, with backward compatibility guaranteed for the next generation.

Sleek and stylish



WD 1TB My Passport Portable External Hard Drive

Staff favorite

Add a splash of color to your Xbox One setup with WD’s My Passport range. Starting at 1TB, you’ll get WD’s reliable drive technology, shrouded in various colored plastic shells.

Go big or go home with this 4TB behemoth from Seagate, providing room for your full games collection for the average user. It offers four times the internal capacity that ships with Xbox Series X, proving an essential pickup today and all you’ll need as a next-generation sidekick.

High capacity, low price



Seagate Portable 4TB External Hard Drive

This 4TB Seagate portable drive is all you need, hitting the highest capacity of its USB-powered drives. Formidable speeds and space for dozens of games make this ideal for any frequent gamer.

Opting for an SSD will boost your read and write speeds over a traditional hard drive, cutting load times across your favorite titles on Xbox One consoles. And while even the best external SSDs for Xbox One don’t meet the demanded speed for Xbox Series X enhanced titles, that boost still comes in handy for backward compatibility or fast transfers to your internal SSD.

Need For Speed



Samsung T7 500GB Portable SSD

Staff favorite

While Xbox-compatible SSDs aren’t cheap, Samsung’s T7 500GB external drive packs top-tier speed below $100. It doubles the storage of the base Xbox One so you can offload your most-played titles for that extra boost. Encased in a shock-resistant metal finish, it fits stealthily beside any console.

Seagate Expansion Card vs. USB: Which is for you?

When your Xbox Series X or Xbox Series S runs low on storage, your decision to expand primarily hinges on whether to invest in the official Seagate Storage Expansion Card for Xbox. With fast storage fundamental to titles designed for the next generation, this external SSD offers a seamless solution, at a high price. The cost may deter some, but reflects the reality of the hardware.

Investing in a USB external hard drive may be more appropriate when looking for an affordable alternative. Connecting USB devices is an easy way to store your games, even if the limitations mean you can’t play without moving them to your internal SSD. It saves redownloading titles, provided you’re happy to cycle them back and forth.

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