Mobile iNAND UFS Series Embedded Flash Drives
from Western Digital



Get Ready for 5G with Robust, Reliable and Fast Edge Storage for Mobile and Compute Devices

5G networks enable ultra-fast speeds, low latency, and high network capacities, transforming not only smartphones, but billions of interconnected Internet of Things (IoT) devices.

The iNAND MC EU551, EU521, EU511 and EU311 are our most advanced Universal Flash Storage (UFS) solutions, built on the latest 3D NAND technology.

  • iNAND MC EU551 and EU521 enable technology and product leadership with UFS 3.1 Gear 4/2-Lane (Universal Flash Storage) EFD for mobility.
  • iNAND MC EU511 is ready for 5G devices with turbo sequential write speeds and iNAND SmartSLC Gen 6 performance.
  • iNAND MC EU311 offers exceptional read and write performance with SmartSLC and UFS 2.1.

These products are designed to deliver a fast, smooth user experience for the most data-intensive flagship mobile devices and tablets


  • UFS 2.1/3.0/3.1 Gear 4, 2-Lane
  • Designed for flagship and 5G smartphones and tablets
  • iNAND MC EU551 is our 2nd-Gen UFS 3.1 storage solution with Write Booster and Host Performance Booster version 2.0
  • Capacities of 128GB to 512GB within a unified small form factor package


Applications and Workloads

  • 5G and flagship smartphones
  • Data-intensive smartphones
  • Tablets
  • Chromebooks
  • Augmented Reality
  • Virtual Reality
  • Artificial Intelligence
  • 4K Video
  • Multiple high resolution cameras