My USB 3.0 device is disconnecting and reconnecting

December 3 2021 7:23am

If you are seeing a USB 3.0 device plugged into a USB-C Expansion Card or USB-A Expansion Card disconnect or repeatedly disconnect and reconnect, there are two things you should try:

  1. Make sure you are running the latest BIOS and drivers.
  2. If the issue still occurs and you are on Windows 10, try disabling USB 3 Link Power Management.
    1. Open PowerShell as Administrator
    2. Execute the following command
      powercfg -attributes 2a737441-1930-4402-8d77-b2bebba308a3 d4e98f31-5ffe-4ce1-be31-1b38b384c009 -ATTRIB_HIDE
    3. Open Power Options by opening Control Panel --> Hardware and Sound --> Edit Power Plan --> "Change advanced power settings"
    4. Under USB settings -> USB 3 Link Power Management, select the Off option for both "On battery" and "Plugged in".