eMMC/UFS Module Combination Interface

The Radxa Dragon Q6A features an onboard eMMC/UFS module combination interface, supporting both eMMC and UFS modules.

danger

Do not use untested third-party UFS or eMMC modules. Some third-party modules may short the SBC and cause permanent hardware damage, and such damage is not covered by warranty.

Hardware Connection

Install the eMMC module or UFS module into the eMMC/UFS module combination interface on the Radxa Dragon Q6A.

eMMC/UFS Module Installation Steps:

1. Ensure that the notched corners of the eMMC/UFS module align with the notched corners of the eMMC/UFS module combo interface on the motherboard.
2. Ensure that the bottom slot interface of the eMMC/UFS module aligns with the eMMC/UFS module combo interface on the motherboard.
3. Gently press the interface at one end of the eMMC/UFS module. If you hear a click, the installation is successful. Use the same method to press the interface at the other end to ensure that the eMMC/UFS module is installed successfully.

Interface Location

You can refer to the Hardware Information tutorial to find the corresponding hardware interface location.

Usage Guide

The eMMC module or UFS module can be used as a system boot medium or as expanded storage space.

For system installation, refer to the following tutorials:

• Install System to eMMC

• Install System to UFS

UFS Performance Reference

The following table shows measured read/write performance of different UFS modules on the Dragon Q6A, tested using the dd command. Data is for reference only.

Product Name	UFS Chip Brand/Model	Capacity	Read Speed	Write Speed	Test Environment
Radxa UFS Module	Samsung KLUDG4UHDC-B0E1 (UFS 3.1)	128GB	1703 MB/s	388 MB/s	Radxa OS (Linux)
Radxa UFS Module	Kioxia THGJFGT1E45BAILB	256GB	1811 MB/s	557 MB/s	Radxa OS (Linux)

Note: Actual read/write speeds may vary depending on the UFS module brand, capacity, firmware version, and test environment. The above data are measured reference values.

Interface Pin Definition

Refer to the hardware schematic diagram on the Resource Summary Download page.