P9 Express, microSD Express Card
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Features
Next-gen ready. Power up your gaming.
microSD Express Card P9 Express
Enjoy smooth gaming with P9 Express, which works with Nintendo Switch™ 2. Featuring PCIe® technology for high-speed performance and Dynamic Thermal Guard (DTG) to maintain optimal temperatures, the card is designed to provide immersive gameplay for both casual and high demand gamers.1
Save every moment of play
Dive into endless solo adventures or gather for unforgettable family game nights. Your gaming universe comes alive on one powerful card, crafted to fill every adventure with joy and wonder.
Speed that sparks your world
Get into your game in a flash. Featuring sequential read speeds of up to 800 MB/s—up to 4x faster than our UHS-I microSD cards*. This card may help minimise installation, update, and load times.2
Stay cool. Play non-stop
Enjoy uninterrupted gaming, even when the action heats up. Dynamic Thermal Guard (DTG) keeps your card at optimal temperatures, maintaining steady performance during high-demand games. Enjoy extended sessions with minimal interruptions and fully immersive gameplay.
Store your games in one compact card
Store all your favourites, save your replays, and download new titles or DLC’s (downloadable content) with up to 512GB of reliable storage. Play more without the frustration of deleting your favourite games or swapping cards. Your game library is always ready for your next adventure, wherever you go.3
Protect your progress
From surprise drops to marathon gaming sessions, the P9 Express is built to survive whatever life throws at you. With water¹, temperature², X-ray³, magnet⁴, drop⁵, and wearout⁶ protection, your gaming wins are safe.4
Future-ready, backward compatible
P9 Express is compatible with Nintendo Switch™ 2, while providing backward compatibility for creative devices with UHS-I slots*. Effortlessly capture and transfer your photos and 4K videos to your workstation and laptop seamlessly, and at your speed.5
Samsung Magician software
Unlock the full power of microSD Express with Samsung Magician software - a user-friendly suite of management tools that facilitates optimal Memory card performance. Verify product authenticity, monitor drive health, and benchmark performance.6
When You’ve Got Everything to Lose,Choose the Sure Thing.
We call them files and folders. But really, they’re the pieces of your life you can’t lose — the photos, the voicenotes , the videos, the moments too precious to risk.It’s the lag that decides game won or game over, the bragging rights over your build, or the relief of never missing a near miss.Whatever it is. If it matters to you, it matters. While others chase the next big thing, we've been engineering the sure thing — peace of mind protection, exactly when you need it.When you’ve got everything to lose, choose the sure thing. Choose Samsung SSD.
Next-gen ready. Power up your gaming.
Specifications
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Speed Class
U3, V30, A1
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Interface
PCIe Gen3.0x1, NVMe 1.3, SD 7.1, UHS-I
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Warranty
Limited 3-year warranty. * Warranty does not extend to dashcam, CCTV, surveillance camera and other write-intensive uses.
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Product Type
microSDXC Memory Card
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Product Name
P9 Express
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Application
Compatible with devices that include a microSDXC™ slot, including Mobile phone, Tablet, Action Camera, Drone, Laptop, Gaming console, etc.
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Capacity
512GB (1GB=1Billion byte)* Actual storage capacity may be lower than the labeled capacity. Part of the storage may be used for system files and other storage control purposes.
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NAND Type
Samsung V-NAND TLC
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Controller
SM2708
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Interface
PCIe Gen3.0x1, NVMe 1.3, SD 7.1, UHS-I
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Dimension (WxHxD)
15x11x1 mm
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Weight
Approx. 0.25g
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Sequential Read
SD Express 800 MB/s, UHS-I 90 MB/s
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Speed Class
U3, V30, A1
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Random Read (4 KB, QD32)
SD Express 65K IOPS, UHS-I 2K IOPS
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Random Write (4KB, QD32)
SD Express 52K IOPS, UHS-I 2K IOPS
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Random Read (4 KB, QD1)
SD Express 9K IOPS, UHS-I 2K IOPS
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Random Write (4 KB, QD1)
SD Express 30K IOPS, UHS-I 2K IOPS
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HMB (Host Memory Buffer)
Support
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Non-Operating Temperature
-40~85℃
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Operating Temperature
0~45℃
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Magnetic
15,000 Gauss, 30 secs
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X-ray
100 mGy
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Water
1M depth, 3% NaCl, 25℃
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Humidity
40℃/93%, 85℃/85%
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Durability
10,000 mating cycles
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EMC
CE(UKCA)/FCC/VCCI/RCM
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Limited 3-year warranty. * Warranty does not extend to dashcam, CCTV, surveillance camera and other write-intensive uses.
Reviews
P9 Express, microSD Express Card
- Customers rave about transfer speeds up to 800MB/s and game load times matching internal SSD performance.
- Reviewers praise seamless compatibility across Nintendo Switch 2, tablets, cameras, and smartphones with effortless setup.
- Many value the card's durability protections against water, drops, magnets, and extreme temperatures.
- Customers appreciate 256GB and 512GB capacity for storing large game libraries and 4K video collections.
- A few mention minor wishes about device compatibility, but overall express strong confidence in reliability.
Filters
Relevancy sort puts the best reviews at the top. We look at things like helpfulness votes, latest review, pictures and other traits that readers look for in their reviews.
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9 Reviews
2026-08-24
Houston
2026-08-23
Memphis TN
2026-08-22
2026-08-20
Bedford
Samsung Pro
Hello, Thanks for sharing your thoughts. If there's anything we can do to improve your experience, please reach Samsung Support at: 1) Call: 1-800-SAMSUNG (ask for Storage Devices) Available 9AM – 12AM EST (Mon-Fri) 2) Email: samsungmemorysupport@sea.samsung.com 3) LiveChat 9AM-9PM EST (Mon-Fri) -- https://www.livehelpnow.net/lhn/lcv.aspx?d=34834&ms=&zzwindow=0&lhnid=29783 ~Samsung Pro
2026-08-18
Conover, NC
2026-08-16
2026-08-12
St george, UT
2026-08-11
2026-08-08
Wheaton, IL
These reviews are managed by Bazaarvoice and comply with the Bazaarvoice Authenticity Policy, which is supported by anti-fraud technology and human analysis. Details at
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- 1. * Copyright© Nintendo. Nintendo Switch is a registered trademark of Nintendo. Go to feature
- 2. * Based on internal testing with the P9 Express microSD card 512GB measured using a PCIe test board, compared to UHS-I microSD cards tested with PRO Ultimate microSD card 512GB and Samsung readers. Actual performance may vary depending on the host device, interface, usage conditions, and other factors. Go to feature
- 3. * All products shown are provided for illustrative purposes only.* 1GB = 1,000,000,000 bytes.Actual storage capacity may be lower than the labeled capacity. Part of the storage may be used for system files and other storage control purposes.* Availability may vary depending on market and timing. Go to feature
- 4. ¹Water proof: up to 1 meters depth, 3% NaCl salt water, 25℃, 72hrs²Temperature proof: operating temperatures of 0℃ to 45 ℃; non-operating temperatures of -40℃ to 85℃³X-Ray proof: up to 100mGy, equal to airport X-ray machines.⁴Magnet proof: up to 15,000 gauss (magnetic field equivalent of a high-field MRI), 30 secs.⁵Drop proof: withstand drops up to 1 meters (appx. 3.3 feet), 10 cycles⁶Wearout proof: up to 10,000 swipes* The multi-proof testing results reported herein were obtained under strictly controlled lab environment, as more fully described in the respective footnote for each test. The test results referenced above are for informational purposes only and provided “as is" without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose. Any attempt to replicate such results are not covered under Samsung’s warranty program and Samsung disclaims any and all liability with respect to damages resulting from such attempts, including without limitation, damage to product, loss of property, or loss of data. For more information on Samsung’s warranty policy, please visit: www.samsung.com/support. Go to feature
- 5. * Compatible with devices with a microSDXC™ card slot & microSD™ Express host devices. Transfer speeds may be limited to UHS-I speeds depending on the host device’s compatibility. Go to feature
- 6. * All products shown are provided for illustrative purposes only.* Samsung Magician software is available on Windows® and macOS®. It requires Windows® 10 and higher, or macOS® High Sierra (10.13) and higher. Older versions of the Windows®, and macOS® operating systems may not be supported. Go to feature
