Mobile iNAND UFS Series Embedded Flash Drives
from Western Digital



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

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

The iNAND MC EU311, MC EU511 EFD (Embedded Flash Drive), and MC EU521 are our most advanced flash storage solutions, built on the latest 3D NAND technology. iNAND MC EU311 offers exceptional read and write performance with SmartSLC and UFS 2.1. iNAND MC EU511 is ready for 5G devices with turbo Sequential Write speed and iNAND SmartSLC Gen 6 performance. iNAND MC EU521 enables technology and product leadership with UFS 3.1 Gear 4/2 Lane (Universal Flash Storage) EFD for mobility. These products are designed to deliver a fast, smooth user experience for the most data-intensive flagship mobile devices and tablets.


  • UFS 3.1 Gear 4, 2-Lane
  • Designed for flagship and 5G smartphone and tablets
  • iNAND MC EU521 is ready for 5G devices with turbo Sequential Write speeds and increased performance with SmartSLC Gen 6
  • Capacities of 128GB to 256GB within a unified small form factor package of 11.5x13x1.0mm


Applications and Workloads

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