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USB Port not recognizing printer

Last Modified: 2018-10-18
Hi, we have a newish Dell laptop with Windows 10 on it. Yesterday I plugged in a USB switch. One side went to the Dell laptop, the other to my HP laptop, and the output of the switch to the printer (A Brother MFC-7340).

Perfect! Moved the switch from one laptop to the other, both print.

today... The dell laptop won't print, Brother printer is offline. Switch to HP laptop, works perfectly. Reboot Dell, nothing. Replug the USB, get an error not recognizing device. Try plugging directly into printer, same thing.

Plugin the old inkjet printer, doesn't recognize that either. Reboot the Dell laptop, and get a critical error screen. Took it into the repair place, he's able to get it back.

1. Plug in the Brother printer, reboot, not there.
2. Go to device manager, uninstall device, reboot, not there. Same unrecognized device issue.
3. Switch to other laptop, prints fine.

Any ideas? What could be the problem? Thanks. Meanwhile we have the dell plugged into the inkjet printer, Same USB port, and it's working as well as it ever works. Meaning the USB port is working, the inkjet printer's a piece of junk.
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