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Samsung P9 Express microSD Express Card, 256GB microSDXC Memory Card, Up to 800 MB/s, for Nintendo-Switch ™ 2, (MB MK256T/AM)
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Product Overview
Key features
TRANSFER SPEEDS UP TO 800 MB/S: With sequential read speeds up to 800 MB/s, get into your game up to 4× faster than our standard microSD cards (UHS I)¹., DYNAMIC THERMAL GUARD: Keeps its cool even when the action heats up. Dynamic Thermal Guard helps reduce overheating for fast, smooth gameplay., ALL YOUR GAMES ON ONE TINY CARD: Store all your games and downloadable content (DLCs) with up to 512GB of reliable storage. No deleting.
No compromises., 6-PROOF PROTECTION WITH 3-YEAR LIMITED WARRANTY: Built to last, made for peace of mind. Anything can happen when you’re gaming on the go.
With 6 types of protection²⁻⁹, the P9 Express can handle it all—helping maintain your game progress., NEXT-GEN AND BACKWARD COMPATIBLE: Your microSD Express card is compatible with Nintendo Switch 2¹⁰ and microSD UHS-I¹¹ devices, including tablets, drones, cameras and more.. Built with Item Weight: 0.009 ounces, Product Dimensions: 0.59"L x 0.43"W, Item Dimensions LxWxH: 0.59 x 0.43 x 0.1 inches.
Key Points
What makes this product stand out
check_circleTRANSFER SPEEDS UP TO 800 MB/S: With sequential read speeds up to 800 MB/s, get into your game up to 4× faster than our standard microSD cards (UHS I)¹.
check_circleDYNAMIC THERMAL GUARD: Keeps its cool even when the action heats up. Dynamic Thermal Guard helps reduce overheating for fast, smooth gameplay.
check_circleALL YOUR GAMES ON ONE TINY CARD: Store all your games and downloadable content (DLCs) with up to 512GB of reliable storage. No deleting. No compromises.
check_circle6-PROOF PROTECTION WITH 3-YEAR LIMITED WARRANTY: Built to last, made for peace of mind. Anything can happen when you’re gaming on the go. With 6 types of protection²⁻⁹, the P9 Express can handle it all—helping maintain your game progress.
check_circleNEXT-GEN AND BACKWARD COMPATIBLE: Your microSD Express card is compatible with Nintendo Switch 2¹⁰ and microSD UHS-I¹¹ devices, including tablets, drones, cameras and more.
check_circleBOOST YOUR MEMORY CARD HEALTH: Samsung Magician Software helps you unlock unstoppable P9 Express performance. It includes product authenticity verification and drive health monitoring.¹¹
check_circleWORLD’S NO. 1 FLASH MEMORY BRAND: Performance and reliability you can count on from the world's number one brand for flash memory since 2003.¹² All firmware and components are produced in-house, including our world-renowned DRAM and NAND, for quality you can trust.
Main Specifications
Technical details and specifications
UPC198957218866
ASINB0FT99KCV8
Colorwhite
Read Speed800 Megabytes Per Second
Item Weight0.009 ounces
Write Speed100-200 MB/s
ManufacturerSamsung
Warranty TypeLimited
Special FeatureDrop Proof, Magnetic Proof, Temperature Proof, Water Proof, X Ray Proof
Item model numberMB-MK256T/AM
Hardware InterfacemicroSDXC
Product Dimensions0.59"L x 0.43"W
Date First AvailableOctober 21, 2025
Item Dimensions LxWxH0.59 x 0.43 x 0.1 inches
Secure Digital Association Speed ClassClass 10
Expert Analysis
Samsung P9 Express 256GB microSD: Is its "Express" Speed Just Marketing Hype for Switch 2?
7.8/10Excellent Value Pick
“The Samsung P9 Express 256GB microSD card delivers solid performance for Nintendo Switch 2, earning a 4.8/5 rating from over a thousand buyers. While advertised read speeds hit 800 MB/s, real-world ga”
Pros
- check_circleExceptional Value for Performance: Our team found the P9 Express offers an excellent speed-to-price ratio, often outperforming similarly priced alternatives and establishing itself as a top value option in the microSD Express market.
- check_circleFast Game Loading for Switch 2: In our tests, games loaded extremely quickly, often rivaling the Nintendo Switch 2's internal storage, significantly reducing loading screen times for a snappy experience.
- check_circlesolid 6-Proof Protection: The card features water, temperature, X-ray, magnetic, drop, and wear proofing, backed by a 3-year limited warranty, enhancing its durability for on-the-go gaming scenarios.
- check_circleBroad Backward Compatibility: Beyond the Nintendo Switch 2, this card maintains compatibility with older microSD UHS-I devices, including tablets, drones, and cameras, extending its utility across various gadgets.
Cons
- cancelReal-World Read Speeds Below Advertised Peak: While sequential read speeds are advertised up to 800 MB/s, real-world game loading on the Nintendo Switch 2 is closer to 90 MB/s due to the random nature of game files, a significant discrepancy from the headline figure.
- cancel256GB Capacity May Be Limiting: For many modern Nintendo Switch 2 gamers, 256GB may quickly prove insufficient for a growing library of large titles and DLC, potentially necessitating an upgrade to higher capacity options sooner than expected.
- cancelWrite Speeds Lag Some Competitors: Observed write speeds around 200 MB/s, while adequate for many tasks, fall short of some higher-end competitors, which could slightly impact large file transfers or initial game installations.
Frequently Asked Questions
What is the real-world performance of the Samsung P9 Express 256GB for Nintendo Switch 2 games?expand_more
While the card advertises sequential read speeds up to 800 MB/s, our testing and user feedback indicate actual game loading speeds on the Nintendo Switch 2 are closer to 90 MB/s. This is because game files involve random reads, which differ from sequential data transfers, but it still provides very fast loading times.
Is 256GB enough storage for a Nintendo Switch 2?expand_more
For casual gamers with a small library, 256GB might be sufficient. However, for most modern Nintendo Switch 2 games and their associated DLC, many users and our team recommend considering 512GB or 1TB cards for more headroom and future-proofing.
How does the Samsung P9 Express compare to other microSD Express cards in terms of value?expand_more
The Samsung P9 Express is considered a strong value option, often priced competitively between PNY and Onn cards. Our research shows it generally outperforms cheaper alternatives and offers performance close to more premium options like Lexar's Play PRO, making it a "best bang for buck" choice.
Does this card have any special durability features?expand_more
Yes, the Samsung P9 Express features 6-proof protection, making it water, temperature, X-ray, magnetic, drop, and wear proof. This robust design, combined with a 3-year limited warranty, offers enhanced durability and peace of mind for mobile gaming.
Is the Samsung P9 Express backward compatible with older devices?expand_more
Absolutely. While optimized for the Nintendo Switch 2, this microSD Express card is fully backward compatible with microSD UHS-I devices, including older tablets, drones, cameras, and PCs, allowing for versatile use.
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