SanDisk Ultra MicroSDXC 128GB (100MB/s, Class 10, UHS-I) – SDSQUAR-128G

The SanDisk Ultra microSDXC 128GB card is built for Android smartphones, tablets, and other devices that take a microSD card, offering enough capacity for a substantial library of apps, photos, and Full HD video. It delivers read speeds up to 100MB/s, quick enough to move roughly 1,000 photos a minute, and carries a Class 10, U1, A1 rating on the UHS-I bus, with the A1 certification specifically speeding up app load times on supported Android devices. The card ships with an SD adapter, letting it work in a standard full-size SD card slot as well as a microSD slot. SanDisk builds the card to resist water, temperature extremes, X-rays, and shock, and it pairs with the free SanDisk Memory Zone app for managing and backing up files directly from an Android device.

Key Features

• Read speeds up to 100MB/s, fast enough to transfer roughly 1,000 photos per minute
• A1-rated performance, speeding up app load times directly from the card on supported Android devices
• Class 10, U1 speed rating, suited to Full HD (1080p) video recording and playback
• 128GB capacity, offering ample room for apps, photos, and video on a phone or tablet
• Includes an SD adapter, letting the card work in both microSD and full-size SD card slots

Technical Specifications

Best Suited For

• Android smartphone and tablet owners who want faster app loading through the A1 rating, alongside extra storage for photos and video
• Buyers who need the included SD adapter, since this version works directly in a full-size SD slot without a separate purchase
• Chromebook users expanding on-device storage for downloaded files and apps

Recommended Action: Confirm your device supports microSDXC (not just microSDHC), since older devices may not recognize cards above 32GB.