The USB-SD-Mux is a tool, to support the development of Embedded Linux devices.

The USB-SD-Mux switches a SD-Card between your Device Under Test (DUT) and a host PC. Therefore handling the SD-Card manually is no longer necessary.

The USB-SD-Mux is connected by an USB 2.0-interface to a host computer. It will be recognized as a common card reader.
For switching between the DUT and the host, the USB-SD-Mux can be controlled via software (available on Github).

The Manual provides further information.

The following figure shows the USB-SD-Mux functionality:

  1. Shape of an Micro-SD Card: Is plugged into the Micro-SD-Card socket of a DUT.
  2. LEDs indicate the status
  3. Micro-SD-Card slot: Insert the micro-SD-Card here.
  4. Micro-USB port: Conntects the USB-SD-Mux to a host PC via an USB-Cable.

Scope of delivery:

  • 1 USB-SD-Mux
  • 2 fact sheets (de, en)


  • ESD protective box

Additional available:


This product is equal to the previous version usb_sd_mux-D02-R01-V01-C00 and is fully compatible.


Main Features
Product line USB devices
Controlled via USB from Host
Technology Micro SD-Card
System Requirements
Operating System Linux with Kernel 4.* or higher
Required Software Python3
Technical Features
USB Generation USB 2.0
RoHS Compatible yes
Mechanical Features
Interfaces Micro USB-B
Other Features
Self-assembly kit no
Case none
CE compliance Tested and chertified according to: EN 55022:2010 EN 55024:2010 + A1:2015
FCC compliance not tested
UKCA compliance Tested and certified according to: BS EN 55022:2010 BS EN 55024:2010 + A1:2015
Country of Origin Germany
HS-Code 84717098


  • 117.45€

    including VAT, plus shipping costs
  • Ex Tax: 98.70€

  • 10 or more 111.57€

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