because bfgminer kept closing on me using a pi,   I moved my 8 ML2s/with powered hubs to a laptop. working fine except one thing.

using the  bfgminer-5.4.2-futurebit2-win64.zip    and  -S ALL --set MLD:clock=600   standard settings.   I have 0-8 showing up in bfgminer.
So trying to figure out why it's seeing a 9th device.  I checked my COMs in device manager  and only have 8 listed