Problem of interaction port USB3 Mini Mac

Mac Mini 2012. Wireless mouse connected to USB 4 port. If I plug a USB3 HDD (in a station host USb3 or enclosure) in port 3, next to the mouse, wireless mouse freezes.  If I replace a wired mouse on the same port, its OK. If I move the mouse wireless ports USB 1 or 2, its OK.   The HD USB dock that I use are self powered so it's not a current max USB issue.

Same scenario if I try ports 1 and 2. It looks like the 4 ports are not independent, 1/2, 3/4 are shared. But I don't understand why it does not work in all cases.

If you have a powered usb hub, you can test the thesis that it is current that seems somewhat likely

Tags: Mac

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