I replaced it with a brand new RSHTech 7-port USB hub, and also the black-screen reboots carry on. I'm stumped at this time, truly starting to suspect my UPS of spikes or momentary cutouts. Anyway I think the Sabrent is https://marcxwks880020.bloginwi.com/62355477/top-guidelines-of-inland-usb-type-c-to-usb-type-c-cable-6ft-2-pack