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Bill Av

macrumors 6502
Original poster
Oct 21, 2006
295
211
Can a bad USB hub cause drives to be ejected improperly if they're not plugged into the hub?

I have a M1 Mac Studio. I have three hard drives plugged into a powered hub that connects to one of the USB A ports on the Studio. I also have two SSDs in a Thunderbolt 3 dock set up as RAID 0 connected to one of the Thunderbolt ports

Two of the hard drives kept getting ejected - sometimes during a backup session. They're desktop drives with their own power supplies.

During troubleshooting, I moved things around, changed cables and plugged the hub into the other USB A port.

A few hours later, the SSDs improperly ejected on their own. This never happened before.

Can a faulty device (I'm guessing the hub) cause problems on the other ports? Does it matter which port you plug a USB hub into?
 
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