The B200mini is prone to suffer from USB port failure due to insufficient stress relief.
The Cable will eventually rip the port traces from the PCB and finally off the USB chips.

This manifests first as sporadic connectivity, dependent on the angle of the USB cable, and finally in complete failure to connect.

This clamp fixes the cable at a slight angle to the original aluminum case, preventing further strain and forcing contact for already damaged traces.

Requires the original USB cable, as the outline is roughly traced as a cutout inside the clamp.
It affixes in the front with 2x M3x6 and 2x M3x12 countersunk screws connecting to the threads inside the bottom shell of the case.
The rear uses 2x M3x20 + hex nut.