Samsung P9 microSD Express 256GB/512GB – 800MB/s Nintendo Switch 2
Samsung P9 microSD Express 256GB/512GB – 800MB/s Nintendo Switch 2
Samsung P9 microSD Express Card – Lightning-Fast Storage for Nintendo Switch 2 & More
Upgrade your gaming experience with the Samsung P9 microSD Express Card, engineered for the demands of next-gen handheld gaming. With sequential read speeds up to 800 MB/s, this card loads games up to 4× faster than standard UHS-I microSD cards — meaning less waiting and more playing. Available in 256GB and 512GB capacities, it's the ultimate storage upgrade for Nintendo Switch 2 and a wide range of digital devices.
Made in Mainland China.
Next-Gen Speed, Backward Compatible
The Samsung P9 Express is purpose-built for Nintendo Switch™ 2 and also works seamlessly with microSD UHS-I devices including laptops, tablets, cameras, and handheld consoles. Capture stunning 4K videos and high-resolution photos with ease, or store entire game libraries — all from one ultra-compact card.
World's #1 Flash Memory Brand Since 2003
Samsung has been the world's leading flash memory brand for over two decades. All firmware and components — including Samsung's world-renowned V-NAND TLC NAND and DRAM — are produced in-house, ensuring a level of quality and consistency you can trust for years of reliable use.
Huge Capacity in a Tiny Package
Store all your favorite open-world RPGs, battle royales, and downloadable content (DLCs) with up to 512GB of storage. No more choosing which games to delete — take your entire library everywhere you go. The card measures just 0.6 × 0.4 × 0.04 inches and weighs approximately 0.009 oz.
Dynamic Thermal Guard (DTG) – Stay Cool During Marathon Sessions
Samsung's Dynamic Thermal Guard (DTG) technology actively monitors and manages card temperature during intensive use, ensuring smooth, consistent performance even during extended gaming sessions. No throttling, no interruptions — just uninterrupted gameplay.
6-Proof Durability Protection
Built to handle anything life throws at it. The Samsung P9 Express features 6-proof protection including resistance to:
- Water (1M depth, 3% NaCl, 25℃)
- Extreme temperatures (-40°F to 185°F non-operating)
- Drops and physical shock
- Magnetic fields (up to 15,000 Gauss)
- X-rays (up to 100 mGy)
- High humidity (up to 85℃/85% RH)
Rated for 10,000 mating cycles — this card is built to last.
Samsung Magician Software
Manage and monitor your P9 Express card using Samsung Magician Software, which includes product authenticity verification and real-time drive health monitoring to keep your card performing at its peak.
Full Technical Specifications
- Model: MB-MK256T / MB-MK512T (Samsung P9 Express)
- Capacities: 256GB / 512GB
- NAND Type: Samsung V-NAND TLC
- Controller: SM2708
- Interface: PCIe Gen3.0×1, NVMe 1.3, SD 7.1, UHS-I
- Sequential Read: SD Express 800 MB/s | UHS-I 90 MB/s
- Speed Class: U3, V30, A1
- Random Read (4KB, QD32): SD Express 65K IOPS | UHS-I 2K IOPS
- Random Write (4KB, QD32): SD Express 52K IOPS | UHS-I 2K IOPS
- HMB (Host Memory Buffer): Supported
- Certification: CE
- Dimensions: 0.6 × 0.4 × 0.04 in | Weight: ~0.009 oz
- Operating Temperature: 0–113°F
- Durability: 10,000 mating cycles
- Compatible Devices: Nintendo Switch 2, mobile phones, tablets, action cameras, drones, laptops, and any device with a microSDXC slot
- Origin: Made in Mainland China
For more information on flash memory storage standards, visit the National Institute of Standards and Technology (NIST), which provides guidance on data storage performance and interoperability standards.
Frequently Asked Questions
Q: Is the Samsung P9 microSD Express Card compatible with Nintendo Switch 2?
A: Yes! The Samsung P9 microSD Express Card (MB-MK256T / MB-MK512T) is specifically designed for Nintendo Switch 2 and takes full advantage of the SD Express interface to deliver read speeds up to 800 MB/s, significantly reducing game load times and enabling faster access to DLCs and updates.
Q: Can I use the Samsung P9 Express card with older UHS-I devices?
A: Absolutely. The P9 Express is backward compatible with UHS-I devices such as older Nintendo Switch models, laptops, tablets, cameras, and smartphones. When used with UHS-I devices, it operates at up to 90 MB/s sequential read speed — still an excellent performer.
Q: What is Dynamic Thermal Guard (DTG) and why does it matter for gaming?
A: Dynamic Thermal Guard (DTG) is Samsung's built-in thermal management technology that monitors the card's temperature during heavy use and adjusts performance to prevent overheating. This is especially valuable during long gaming sessions, ensuring your card maintains stable, consistent performance without unexpected slowdowns.
Q: How much storage do I actually get with the 512GB version?
A: The 512GB version is labeled based on 1GB = 1 billion bytes. Actual usable storage may be slightly lower than the labeled capacity, as some space is reserved for system files and storage management. In practice, this card holds dozens of full Nintendo Switch 2 games and plenty of downloadable content.
Q: Is the Samsung P9 microSD Express Card waterproof?
A: Yes. The card features 6-proof protection, including water resistance rated to 1 meter depth in 3% NaCl solution at 25℃. It's also resistant to extreme temperatures, drops, X-rays, magnetic fields, and high humidity — making it ideal for gaming on the go.