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My four ML2 have been happily mining for months until this morning's April W10 update. Go figure...

bfg miner display:

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NO DEVICES FOUND: Press 'M' and '+' to add
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 [2018-05-13 10:17:37] Waiting for devices; press 'M+' to add, or 'Q' to quit



Physical:   2 x{2 ML2/Anker 9 port hub} -> USB 2.0 --> mobo{BIOSTAR TB250-BTC PRO LGA 1151 Intel B250}

Mobo is happy mining Claymore and Equihash on GPUs -> Problem isolated to ML2 path

I was able to mount & access usb drives when plugging into 9 port hub.    I can also ear ML2's being recognized when plugged into same up.  Just can't see them with the BFG 5.4.2 from the Github from this thread.

Software:  BFG 5.4.2, from jstefanop's github, on this thread, been fine for months.   
- Google found a couple threads where BFG won't detect devices, not sure how they relate here.

UART VPC Driver: Obtained from this thread, been working fine from the get go.

I'm physically away from the rig, will have a short window on the rig tomorrow, and wanted to get my thoughts in order before tackling...

I'm reckoning since this coincided with this morning's W10 update, I may not be alone.

Much obliged!