All MicroSD Express Cards

The SanDisk 128GB microSD Express is engineered for speed, reliability, and performance in professional environments. Designed around performance for gameplay on the Nintendo Switch 2, keep more games with you and experience faster load times. Built with a PCIe Gen 3 NVMe interface, this next-generation memory card delivers read speeds up to 880MB/s and write speeds up to 480MB/s—far outperforming traditional UHS-I microSD cards. Ideal for 4K and 5.3K video recording, mobile app storage, and fast file offloading, this microSD Express card also supports Application Performance Class A1 and is designed for the Nintendo Switch 2. Its high-speed capabilities make it the only solution for expanded storage on the Nintendo Switch 2.

The 128GB capacity provides ample storage for large file sets, HD video libraries, game content, or massive image archives. Designed with ThermAdapt technology, the card dynamically manages heat output, maintaining top performance during heavy use. This is especially valuable for environments involving non-stop read/write cycles like point-of-sale systems, media production workflows, and drone-based fieldwork. It’s also waterproof, shockproof, X-ray-proof, and temperature-proof—built to withstand harsh conditions and shipping environments alike. It’s fully backward compatible with UHS-I devices, so you can deploy across mixed hardware environments without issue.

Specifications

• Model Number: SDSQXFN-128G-GN4NN
• Class: Unspecified
• Form Factor: microSDXC EXPRESS
• UHS BUS Speed: UHS-I
• Read Speed: Max 880MB/s
• Write Speed: Max 480MB/s
• UHS Speed Class: U3
• Video Speed Class: Unspecified
• App Performance Class: A1
• Video Format Capability: 4K Video
• Operating Temperature: -13° – 185° F (-25°C – 85° C)

Water proof, Temperature proof, Humidity proof, Drop proof, Magnetic proof X-ray proof, Shock proof and Wear Out proof

Estimated Number of Photos & Videos
JPG Photos: 34,490 photos
RAW Photos: 2,380 photos
HD Video: 1,705 minutes
4k Video: 340 minutes

Model # SDSQXFN-128G-GN4NN