RM520N-GL on M.2 B-Key NGFF-to-USB 3.0 Adapter Not Recognized on Windows 10

Hello Support Team,

I am having trouble getting my RM520N-GL module to be recognized when using the M.2 B-Key NGFF→USB 3.0 adapter on a Windows 10 desktop. So far, I have downloaded and installed the following drivers:

  • Quectel_Windows_USB_Driver(Q)_MBIM_V1.3_EN
  • Quectel_Windows_USB_Driver(Q)_NDIS_V2.7_EN
  • quectel_lte_windows_usb_driver_rndis_v1-1
  • quectel_windows_usb_driver(U)_V1.0_EN

When I connect the adapter via a standard USB-A to USB-A cable, both ends light up red, but nothing appears in Device Manager. When I use a USB-C to USB-A cable, the USB-A end lights red and the USB-C end lights blue, yet again the desktop does not detect any new hardware.

I have tried multiple ports and cables without success. Could you please advise on any additional drivers, firmware, or configuration steps required to get this adapter and module properly recognized on Windows 10?

Thank you for your assistance.

Best regards,

Dear @sense
Could you share a picture of your setup?
Is it enough power? Did it have any unrecognized device in device manager?

You need to mention two other letters after “-GL”.

Please feel free to ask if you have any further questions.
My desktop is equipped with 32GB of RAM, a GTX 4080 GPU, and an Intel Core i9 processor.

Dear @sense
Please share the screenshot of device manager.
If don’t have any appear in device manager, it seems hardware issue.

sorry if i’m not on topic, but be careful switching on a board device over a conductive surface as pc metal case, it cold produce fireworks and damages :slight_smile:

The model number is RM520NGLAP-M20-SGASA.

then you have no USB interfaces on the modem and there is no point in putting it into a USB adapter

“Since the modem doesn’t have a USB interface, how should it be connected instead? I see what looks like a USB or USB-C port — what are those used for? Does this mean the device is not intended for use with a PC?”

over PCI, where PCI means a bus, not just a connector.