So, all in all it is working now, correct?
The remaining issues are
– no boot with attached adapter
– if attaching adapter while booting it is not recognized
– KB/mouse/BTW issue
Correct so far?
Is the write filter disabled while configuring and using the BTW adapter the first time.
What is your BIOS bootorder?
Can you try to attach the adapter to a (powered) USB hub instead of directly to the unit?
CG