These are small boards that plug into a MicroSD card slot and let you access the slot's signals, in a way, they're MicroSD slot breakouts. The traces are somewhat length-matched, even! I had to get a batch of these for my own projects, as I noticed that nobody offers these - which means that I shall! They're also open-source, so you can remix them for your own designs, just like I did for the uSDlocker's programming adapter.

The "wire" board has pads that you can use to connect wires to the SD card pins. The "FFC" board has a footprint for a 0.5mm 8-pin FFC connector - currently unpopulated, but I will see about sourcing sockets and offering a version with a socket and maybe even a cable to go with it. Both of these PCBs are 0.8mm thickness and have ENIG-plated pads.

These boards were originally designed for the Tizen SDWire project. For the "wire" board, I took the source files and updated them, and the "FFC" board is a redesign of the "wire" board. I ordered them for my own exploration purposes. If you could use some for a project or research effort of yours, I will happily throw a few into an envelope and mail them to you!

This is a fully open-source product! Use the links below ("Source code" for "wire" breakout and "Design files" for "FFC" breakout) to get the KiCad files for your own research and modifications.