Interactive fix flowchart
USB device not recognized
Fix USB device not recognized errors, USB drive not showing, USB keyboard or mouse not working, USB printer not detected, USB-C devices not working, and bad USB port problems.
All fixes in this guide
Fix: USB device not recognized
USB device not recognized usually means the computer can see something was plugged in, but it cannot identify it correctly.
Fix: USB drive or external hard drive not showing up
A USB drive may not show up because of a bad port, bad cable, missing drive letter, file system issue, not enough power, or drive failure.
Fix: USB keyboard or mouse not recognized
A USB keyboard or mouse is usually not recognized because of a bad USB port, loose receiver, USB hub problem, low battery for wireless devices, or a stuck driver.
Fix: USB printer not detected
A USB printer may not be detected because the wrong cable is used, the printer is off, the cable is charge-only or damaged, the USB port is bad, or the printer driver is missing.
Fix: Phone not recognized by USB
A phone may not be recognized by USB because the cable is charge-only, the phone is locked, file transfer mode is not selected, the port is dirty, or the computer driver is missing.
Fix: USB-C device not working
USB-C devices fail when the cable only supports charging, the port lacks video or data support, the adapter is directional, the device needs more power, or the port is dirty.
FAQ
Why does my computer say USB device not recognized?
The most common causes are a loose cable, bad USB port, faulty USB hub, low power, damaged device, dirty port, wrong USB-C cable, or a driver problem.
What should I try first for USB device not recognized?
Unplug the device, restart the computer, try another USB port, avoid hubs, and test the device on another computer if possible.
Can a USB cable charge but not transfer data?
Yes. Some USB cables are charge-only and will not work for data devices, printers, phones, or external drives.
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