Is this fast enough for Steamdeck

U3 is the best choice for it. Using an U1 for Steam Deck has drop outs when downloading new games and takes forever. 'U3'. The small 'U' on the front of a MicroSD card with either a 1 or a 3 inside it is the most important thing to look for when picking out a card. This describes the MINIMUM write speed the card will retain during sequential write operations like large game files, 1 for 10MB/s and 3 for 30MB/s. Most importantly this means when downloading new games to a U3 card it will ALWAYS be above 30MB/s, allowing writing headroom for both a fast internet connection, and the unpacking and decompressing steam does simultaneously. For optimal performance with the deck, the card you pick needs to be U3. The 10MB/s a U1 card provides will not be enough to download new games consistently. It will result in write operation dropouts where downloading gives way to unpacking and decompressing, meaning that large games will take hours upon hours to download, especially when using a fast internet connection.

Can this use on Nintendo switch? Thank you

you can use any micro SD card in the Switch, but make sure the read speed is over 90mb/s. this one is ideal, the 16gb storage is 90mb/s, 32 is 100mb/s and the larger storage is up to 150mb/s. don't get conned by the "official" Nintendo ones; you're paying a premium for Mario on your SD card.

Which card fits on a Nintendo switch lite with 256

I’m not sure about the lite, but i bought this for the switch OLED model and it worked perfectly, hope that helps

Will this work in a Samsung AO4s ? thanks...

I would think so. Micro SD seems the standard.

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SanDisk 128GB Ultra microSDXC card + SD adapter, Memory card Full HD, up to 140 MB/s, For smartphones and Tablets, with A1 App Performance, UHS-I, Class 10, U1

Product ID: 478418011

Details

Brand
SanDisk
Colour
Black Grey Red
Compatible devices
Camera Tablet
Memory storage capacity
128 GB
Model name
UHS I

⚡Up to 140MB/s transfer speed

💾128GB massive storage

📱A1-rated app performance

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Description

💾 Upgrade your mobile storage game—because running out of space is so last year!

OPTIMIZED FOR APPS - A1-rated performance ensures faster app launches and smoother multitasking on your smartphone or tablet.
MASSIVE 128 GB STORAGE - Store thousands of photos, hours of Full HD video, and your entire app library without compromise.
SMART FILE MANAGEMENT - SanDisk Memory Zone app automates backups and frees up device space, so you never run out of room when it matters most.
BLAZING FAST TRANSFERS - Up to 140MB/s read speeds let you move 1000+ photos in under a minute—because your time is valuable.
UNIVERSAL COMPATIBILITY - Includes SD adapter for seamless use across smartphones, tablets, cameras, and laptops—flexibility that fits your lifestyle.

The SanDisk 128GB Ultra microSDXC card delivers reliable, high-capacity storage with up to 140MB/s transfer speeds and A1-rated app performance. Compatible with Android smartphones, tablets, cameras, and more, it includes an SD adapter for versatile use. Perfect for storing Full HD videos, photos, music, and apps, it also supports easy file management via the SanDisk Memory Zone app. Durable and efficient, this Class 10 UHS-I card is a top choice for professionals seeking fast, spacious, and hassle-free mobile storage.

Specifications

ASIN	B0B7NTY2S6
Best Sellers Rank	7 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 1 in Micro SD Memory Cards
Box Contents	1 package
Brand Name	SanDisk
Colour	Black, Grey, Red
Compatible Devices	Camera, Personal Computer, Smartphone, Tablet
Country of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (171,177)
EU Spare Part Availability Duration	1 Years
Global Trade Identification Number	00619659200558
Hardware Connectivity	microSDXC
Item Dimensions D x W x H	1D x 15W x 14H millimetres
Item Dimensions L x W	15L x 11W millimetres
Item Type Name	N / A
Item Weight	5 g
Manufacturer	SanDisk
Manufacturer Part Number	SDSQUAB-128G-GN6MA
Media Speed	Up to 140MB/s
Memory Storage Capacity	128 GB
Model Name	UHS I
Model Number	SDSQUAB-128G-GN6MA
Product Features	Portable
Product Warranty	2 year manufacturer
Read Speed	140 Megabytes Per Second
Secure Digital Association Speed Class	Class 10
UPC	619659200558
Warranty Type	Lifetime

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