![]() ![]() In any Finder window, click on Applications > Utilities > TerminalĢ. ![]() ![]() If you have a Mac computer, you can troubleshoot your USB ports via the Terminal:ġ. Click Scan and Repair in the next window. Find the Tools tab, and in the Error Checking section, click the button labeled Check.Ĥ. In the pop-up menu, click on Properties.ģ. Right-click your malfunctioning USB drive in Windows File Explorer.Ģ. If you have a Windows computer, the latest versions include a helpful USB troubleshooter you can use to find stubborn problems:ġ. Photo courtesy of Elzee Photography showing her customized Tower Flash Drives and Wooden Slide Top Boxes. Wait a minute or so, then turn your computer back on try plugging in your USB device again. This will force the microprocessor to reload your hardware drivers from scratch. Shut down your computer, and unplug it once it turns off. Rebooting your computer forces any misbehaving processes or drivers to shut down, giving you a clean slate. It's surprising how many problems you can fix by simply turning your computer off and then back on again. Sometimes even a temporary communication hiccup between your motherboard and USB port can cause USB connection errors. Your computer's drivers can get corrupted over time or become invalid after a system update. Reconnect them one by one until you find the error. If your computer recognized the USB device, one of the other items you had connected might be causing the problem. You can also try disconnecting all your attached USB devices, like your keyboard and mouse, except the one you want to test. Try to disconnect the hub and plug your USB device straight into the USB port. If this is the case, your computer might be struggling to provide enough power to all the connections. Sometimes, connecting a hub with too many USB ports can be too much for a computer, and it can randomly refuse to recognize certain ports. Check that both of the cable's ends fit snugly into their ports, or try using a different cable. If you're trying to connect a USB cable, it's possible that the cable is damaged or incompatible with your device or port. A single port might have a software incompatibility issue or a loose connection. If your USB device doesn't work in one port but works fine in the next, the port is probably the problem. If your system comes with multiple USB ports from different generations, or you use a USB hub, start by testing your USB device in various ports. Here are four troubleshooting solutions you can try when your device does not recognize your USB. However, it may also be something more serious, like physical damage to the flash drive or port. It can be caused by something minor like software conflicts, outdated USB-C drives, or insufficient power due to too many attached devices. Fortunately, this error is usually just a momentary glitch. If you store important data on USB flash drives or use a USB mouse, keyboard, or external hard drive, seeing the USB device not recognized error can be one of the most nerve-wracking events of your day. ![]()
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