This case holds a Raspberry pi B+ or B 2 and a USB-Soundcard (in my case a Createive SoundBlaster Play) and a two-Port 12V-to-USB vehicle adapter.
It is designed that one USB-Port of the adapter is dissolderd, the other has an outside-connection for powering other things (like a 4G router).
The housing has also a hole for the LAN-Port an a 15-pin d-sub connector.
In my case, there is also a CAN-bus-controller installed.
The power, CAN and audio signals are all connected via the d-sub connector.
Prints verry easy except the bridge for the d-sub connector.