PS5 Storage Full? M.2 SSD vs USB Drive: What UK Buyers Need to Know

Running out of room on your PlayStation 5? The right upgrade depends on one question: do you want to play PS5 games directly from the extra storage, or simply keep downloads somewhere until you need them?

Quick answer: A compatible internal M.2 SSD can store and run PS5 games. A compatible external USB drive can store PS5 games, but you must copy them back to console or M.2 SSD storage before playing. PS4 games can run directly from supported USB extended storage. This distinction applies when buying a new or refurbished console. Sony explains the storage options here.

PS5 storage options at a glance

When should you buy an M.2 SSD?

Choose an internal M.2 SSD if you switch between several large PS5 games and do not want to move them each time. The drive goes into the PS5 expansion slot and gives you more space for games you can launch directly. It is a separate purchase unless the specific console listing says an extra drive is included.

Check Sony’s current PS5 M.2 compatibility and installation guide before buying. A drive must meet its interface, physical-size, cooling and performance requirements. Do not assume that any laptop M.2 SSD will work, and check the complete drive-and-heatsink dimensions. Follow Sony’s instructions when fitting it.

When does a USB drive make sense?

A compatible USB drive is useful if you mainly want to keep PS5 downloads without repeatedly downloading them, or if you have a sizeable PS4 game collection. You can store PS5 games there, then transfer a game back to built-in or M.2 SSD storage before playing. Sony’s USB extended storage guide gives the latest drive requirements and setup steps.

Buying a fast external SSD does not change the PS5-game rule: PS5 games cannot launch directly from USB extended storage. If quick switching between installed PS5 titles is your goal, choose a compatible internal M.2 SSD instead.

What to check on a refurbished PS5

Read the individual listing for the console’s stated storage capacity and exact model. PS5 storage capacities vary by model and listing, and the usable free space is lower after system files and installed content. Ask whether an extra M.2 SSD is fitted rather than treating an advertised capacity as proof of an upgrade.

If you are choosing between the two newer PlayStation options, compare their built-in capacity and gaming features in our PS5 Pro vs PS5 Slim refurbished buying guide. The PS5 Pro's larger built-in SSD may affect whether you need extra storage at all.

Also check whether a controller, power cable and other accessories are included: bundles can differ. If you plan to buy physical games, read our PS5 Disc vs Digital buying guide before choosing. Storage expansion will not add a disc drive to a console.

Which setup should you choose?

Mostly one or two PS5 games: Start with the console’s built-in storage. Add a drive when you know how much room you actually need.

Several PS5 games ready to play: Choose a compatible internal M.2 SSD with cooling that fits Sony’s specifications.

Mostly PS4 games or a download archive: A compatible USB extended storage drive may suit you, provided you are happy to transfer PS5 titles before playing.

Frequently asked questions

Can I play PS5 games from an external SSD?

No. Even an external SSD connected by USB is USB extended storage: move PS5 games to the console SSD or a compatible internal M.2 SSD to play them.

Can I play PS4 games from USB storage on PS5?

Yes, from a compatible USB extended storage drive, subject to Sony’s setup requirements.

Does an M.2 SSD replace the console’s built-in storage?

No. It adds storage through the PS5 expansion slot. Check that the exact drive and cooling solution meet Sony’s latest requirements.

Shop refurbished PS5 consoles

Compare the model, capacity, condition and included accessories on each listing in Tech Market®’s current PS5 range. Stock and configurations change, so use the product details for the console you actually order. Tech Market provides a 12-month warranty on eligible devices.