Why Is My USB Device Listed as Unknown in Windows 11?

Quick Tips

• USB device detection can be hampered by faulty hardware and software from both sides.
• Your PC and its drivers must be up to date.
• Check power management and BIOS settings, and disable Fast Startup if need be.

It’s never fun to have to try every USB port on your PC in the hope that one of them detects your device. But it’s even less fun if your device is detected but listed as unknown. Is this a problem with your device or your machine? In this article, we explore some of the main reasons for a USB device showing up as unknown device and offer a few fixes to help.

What Causes a USB Device Showing Up as Unknown Device?

When you plug in your USB device, whether it’s an external storage device or a keyboard, your PC automatically begins communicating with it. Most plug-and-play devices use standard protocols so they can be used almost instantly. More specialized devices like printers or drawing tablets will require extra drivers of their own. Some Wi-Fi adapters even come with their own preloaded drivers on the device.

When your device is not recognized and listed as unknown, this could be due to several causes. These include:

• Faulty USB port – Your port itself isn’t functioning properly or, at the least, well enough to detect that something is plugged in, but not enough to know what.
• Faulty device – If your device is old, corrupted, or damaged, it might have difficulty connecting.
• Driver issues – Despite standard protocols, sometimes a device cannot connect because of incorrect or missing drivers.
• Power management – Power settings can disable the detection of devices to save battery life.
• Corrupted or outdated software – Lack of updates or malware can prevent proper device detection.

Fixes to Try

If you’re encountering an unknown device USB Windows 11, there are some troubleshooters you can use to regain detection of your device. Let’s take a look:

Try a Different Port

For port or device damage, first check by using another USB port on your PC. Inspect the USB device for damage too. You can also test the device on another PC, if possible.

Update Your USB Drivers

To update your USB driver components:

Step 1. Open the Run Dialog (Win + R) and type “devmgmt.msc” before hitting “Enter.”

Step 2. Scroll down to “Universal Serial Bus controllers” and click to expand.

Step 3. If any devices have a yellow exclamation mark (indicating a driver problem), right-click them and select “Update drivers.”

Step 4. Click “Search automatically for drivers.”

Step 5. See if there are any new ones that need to be installed and follow the steps.

Change Power Settings

If you suspect your power options are getting in the way, you can disable them:

Step 1. Type “Power Management” into the Windows Search Bar and choose “Edit power plan.”

Step 2. Click “Change advanced power settings” in the next window.

Step 3. In the Power Options window, click “USB selective suspend setting.”

Step 4. Set USB selective suspend to “Disabled” for both “On battery” and “Plugged in” (if available), then test the device again.

Step 5. Click “OK” to finalize and test your USB device again.

Check Your BIOS

Sometimes, USB ports can be hindered by the BIOS. You’ll need to change things there:

Step 1. Restart your machine, and when you see the manufacturer logo appear, hit the BIOS key, and press the key your manufacturer uses to enter BIOS/UEFI, commonly “Delete,” “F2,” “Esc,” or “F10.”

Step 2. In the BIOS menu, look for a USB configuration menu or similar.

Step 3. Ensure that any option you see to enable the USB ports is toggled on.

Step 4. Save your changes and boot as normal.

Disable Fast Startup

Fast Startup prioritizes speed when booting, but can also interfere with port detection. Here’s how to disable it:

Step 1. Open the Control Panel via the Search Bar.

Step 2. Change “View” to “Large icons” and click “Power Options.”

Step 3. Click “Choose what the power buttons do.”

Step 4. Choose “Change settings that are currently unavailable.” Ensure you have Admin permissions.

Step 5. Uncheck “Turn on fast startup” and then click “Save changes.”

Step 6. Reboot your machine and test.