My Microsoft Surface Book 3 15" laptop just updated to Windows 10, version 2004. After the update, there's a new "Unknown device" device listed in Device Manager. It didn't exist before today (August 15, 2020):

Device Manager Unknown device Properties

According to the device properties, there is no driver installed for this device. Clicking "update driver" and searching my PC or Windows Update does not find a driver, or do anything to help identify the device.

When I go to the "Details" tab and scroll through the property dropdown, I can see that the device has a Hardware Id of "Root\SQExtFramebufferUmode" and a device instance path of "ROOT\SQEXTFRAMEBUFFER\0000". None of the other properties seem particularly helpful in identifying the device.

Unknown device Hardware Ids

Some other info that might be helpful: Other than the Surface Book 3 built-in hardware, I have a Surface Dock 2 attached to my machine, and attached to that is a Corsair K68 USB keyboard, a Logitech M500s USB mouse, and a Dell U3419W monitor connected via USB-C to one of the monitor ports on the Surface Dock 2. The only other devices I have that are sometimes connected are a pair of Bose NC700 headphones, and an X-Box Wireless Controller Adapter, but neither of those devices were attached when this screenshot was taken.

Can anyone tell me what this device might be, and how I can obtain drivers for it?

  • That looks (Google Search) like it could be the Square Reader device. Is your Surface supposed to have this device? – John Aug 15 '20 at 22:15
  • @John, no I don't have a Square Reader. – Joshua Carmody Aug 15 '20 at 22:21
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    right click on it and select uninstall, does it come back after a restart? – Moab Aug 15 '20 at 23:16
  • @Moab Huh, no it didn't. Uninstalled and rebooted. It's still gone. Weird. Problem... solved, I guess? – Joshua Carmody Aug 16 '20 at 5:21
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    A driver install may have put it there, so it should stay gone until you reinstall that driver, what ever it was. – Moab Aug 16 '20 at 12:16

This is a virtual Device from Squirrels LLC

Used by AirParrot


  • That sounds plausible! I do have AirParrot 3 installed. How did you find this out? – Joshua Carmody Oct 17 '20 at 5:10

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