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eUSB FAQs

Managed NAND
eUSB(7)
What is eUSB?
The embedded universal serial bus (eUSB) is a NAND flash-based memory solution that is compliant with the USB industry standards. USB is a widely adopted interface used across multiple platforms and operating systems, providing a low-cost, efficient data transfer solution for current applications and beyond.
What are the benefits of eUSB?

eUSB is a fully managed solution that utilizes NAND memory and, through an onboard controller, internally handles all media management and ECC control. The eUSB provides customers with a complete storage solution that easily integrates into their system and, in turn, fuels a reduced time to market.

Using native SLC NAND memory, combined with a rich set of management features such as global wear leveling and dynamic data refresh, eUSB offers a superior combination of performance and reliability.

How does the eUSB attach to my system board?
The eUSB device has a 10-pin (2x5) USB female connector compatible with the industry-standard 10-pin connector found on most motherboards. A mounting hole (connected directly to internal ground) is also provided on the PCB to ensure a stable connection to the system board.  Additional holes in the PC board, utilized during manufacturing for de-paneling, can also be used as additional mounting locations if required.
Can I use the eUSB as a boot device?
Yes. Micron’s eUSB can be used as the operating system boot and main storage device. However, the application’s BIOS must support the boot mode feature, which should not be a concern for most systems that were manufactured in the last five years and support USB 2.0. In either the main storage or boot mode, the eUSB should be recognized as a fixed hard drive in the system.
Does Micron offer the eUSB with a 3.3V option?
Yes. Please check the part catalog for Micron’s current eUSB offerings.
Does Micron provide a way for me to determine the useful life remaining on the device?
Our latest generation eU500, eUSB 3.1 products do provide a method to extract relevant lifetime data through the use of SMART commands. However, previous generations of eUSB products do not support a runtime method to collect lifetime data.
Is eU500 (eUSB 3.1) fully backward compatible with e230 (eUSB 2.0)?
Yes. Micron’s latest generation eU500 eUSB 3.1 products are backward compliant with the USB 2.0 protocol. The eU500 family also supports the same form factor, voltages and connector offerings as the previous generation e230. Please check the part catalog for Micron’s current eUSB offerings.