PC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchYes. Every Steam Deck model listed by Valve has a microSD card slot, so you can add storage without opening the console. For most owners, a UHS-I U3 microSDXC card is the easiest, reversible way to install more games. You can also replace the internal SSD, but that requires opening the Deck and following the instructions for your model.
How Steam Deck storage expansion works
Valve lists a high-speed microSD card slot on every Steam Deck model. Its specifications identify support for SD, SDXC and SDHC cards over UHS-I; Steam Support says any UHS-I card rated class 3 or better is supported. A UHS-I U3 microSDXC card is a suitable choice for adding game storage. UHS-II and UHS-III cards can work, but the Deck does not use their higher bus speeds.
Valve’s Steam Deck booklet describes adding up to 2 TB of storage with a microSD card. Treat that as Valve’s published capacity guidance, not an independently tested maximum. The booklet and hardware specifications establish that the card slot is intended for expandable storage, but do not specify a particular card brand or game-loading performance.
Install and format a microSD card
- Insert the card into the slot on the bottom surface of the Deck.
- On the Deck, open Steam > Settings > System > Format SD card.
- Confirm the format. Formatting erases the card, so copy any files you want to keep somewhere else first.
After SteamOS formats the card, it is ready for use as game storage. Format it in the Deck before installing games rather than assuming a card’s existing contents or format will be ready for SteamOS.
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- Compatible with Nintendo-Switch 1 (NOT Nintendo-Switch 2), smartphones, and tablets
- Boost your gaming experience with up to 160MB/s read for fast load times
- A2-rated app performance lets you quickly access and enjoy games and apps without lag for an enhanced gaming experience and a competitive edge
- Store more of your favorite games and other content with capacities up to 2TB
- Built to endure with temperature resistance, waterproofing, x-ray protection, and more
MicroSD card or internal SSD replacement?
| Factor | microSD card | Internal SSD replacement |
|---|---|---|
| Installation | Insert the card and format it in SteamOS; no chassis opening is needed. | Requires opening the Deck and careful, model-specific work. |
| Cost | Depends on the card you choose; no current price is established here. | Depends on the replacement SSD and tools; no current price is established here. |
| Portability | Removable and easy to move between compatible devices, though formatting and device compatibility matter. | Installed inside the Deck rather than removable for routine use. |
| Game-load performance | Valve specifies UHS-I support, but the cited specifications do not provide comparative game-load times. | The cited replacement guides cover the procedure, not comparative game-load benchmarks. |
| Risk and effort | Simple and reversible; formatting erases the card. | More involved, requires tools and careful handling, and may require SteamOS recovery or re-imaging. |
When to replace the Steam Deck SSD
Replacing the internal SSD is an option if you specifically want more built-in storage and are comfortable with a hardware repair. iFixit publishes separate SSD replacement guides for the LCD and OLED models. The process involves opening the chassis; remove any microSD card before opening the Deck. The OLED guide also points to Valve’s recovery instructions for repairing or re-imaging SteamOS, which may be needed after the replacement.
Use the guide for your exact Deck model and follow its precautions. Unlike adding a card, an SSD swap is not a quick, external storage change; it calls for tools and careful handling.
Quick Recap
Best Value
- CAPTURE LARGER THAN LIFE. Unlock startling 5K[3] point-of-view and pristine high-res stills with video speed class ratings of U3 and V30[4].
- SPEED BARRIERS SHATTERED. Save precious moments with rapid read speeds up to 245MB/s[2] and write speeds up to 170MB/s[2] [256GB-1TB capacities[1]].
- MAXIMIZE WITH MASSIVE CAPACITY. Record longer and store more with up to 2TB[1] of storage.
- DURABILITY YOU CAN COUNT ON. SANDISK microSD cards are temperature proof, humidity proof, waterproof, shock proof, drop proof, magnet proof, X-ray proof and wear-out proof[7].
- EASY CONTENT MANAGEMENT. Easily back up, organize, and transfer your photos and videos with the SANDISK Memory Zone desktop or Android mobile app[10].
Rank #4
- EXPAND YOUR STORAGE. Insert your card to add massive storage up to 1.5TB[1] to your Android smartphones and tablets, digital cameras, and laptops.
- SPACE FOR MORE. With expansive capacities up to 1.5TB[1], capture and store hours of Full HD video[4], movies, music, games, photos, and podcasts.
- MOVE FILES FAST. Use your card with the SANDISK QuickFlow microSD UHS-I Card USB-A Reader[6] to achieve up to 195MB/s[2] read speeds [128GB-1.5TB models] and offload your content fast.
- LOAD APPS IN A SNAP. Rated A1[3], the SANDISK Ultra microSD card is optimized for faster app launch and overall app performance.
- EASY CONTENT MANAGEMENT. Easily back up, organize, and transfer your photos and videos with the SANDISK Memory Zone desktop or Android mobile app[5].
Rank #3
- Note: NOT compatible with Switch2 Please note that this product is not a microSD Express card and is not compatible with Switch2 for game storage or save data. If used in the Switch2, it may only support limited functions such as storing screenshots or videos, but will not allow game installation or save file access.
- Designed for dependable storage on portable gaming consoles
- Steam Deck users: For optimal gaming performance, including the ability to store and load video games, we suggest using a Gen4x4 2230 SSD.
- 5-year limited manufacturer warranty
- SmartPhones: S20, S20+, S20 ultra 5G, S10 lite, S10, S10+ A22, A22 5G, A52 5G, A32 5G, A52, A72, A32, A02s, A12, A21, A71 5G, A51 5G, A20s, Note 10+, J4 Core, J8, J7 Star, J7, Note 10 Plus. SAMSUNG TABLETS: Tab S7 FE 5G, Tab S7 FE, Tab A7 Lite, Tab A7 10.4 (2020), Tab Active 3, Tab S7, Tab S7+, Tab S6 Lite, Tab S6, Tab A 8.0 (2017), Book S and 10th Generation Fire Tablets.
Rank #2
- Compatible with Nintendo-Switch 1 (NOT compatible with Nintendo-Switch 2), smartphones, and tablets
- Boost your gaming experience with up to 160MB/s read for fast load times
- A2-rated app performance lets you quickly access and enjoy games and apps without lag for an enhanced gaming experience and a competitive edge
- Store more of your favorite games and other content with capacities up to 2TB
- Built to endure with temperature resistance, waterproofing, x-ray protection, and more
Sources
- Valve Steam Deck technical specifications
- Steam Support: microSD card support and formatting
- Valve Steam Deck booklet
- iFixit Steam Deck LCD SSD replacement guide
- iFixit Steam Deck OLED SSD replacement guide
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
