This might interest those that want to turn their retail/debug Xbox into a fully-functioning development kit without having to spend $500+ on one. It works on any version 1.0 through 1.2 motherboard and can be great for troubleshooting crashes of all kinds without requiring the use of XDK software.
I'm selling pre-made units for $30 plus shipping and would also like to get a feel for how many might want one in Europe so I can bulk-ship to a distributor to help save some on shipping costs as it's usually around $15 USD to ship from the US otherwise.
Everything is fully open-source if you'd like to build/sell them yourself as well. Any questions, feel free to ask.
https://github.com/XboxDev/serial-usb-adapter