Help DSOM 90M USB Troubleshooting

Has anyone successfully interfaced mPCIE (usb2.0) interface to communicate with cellular modem like Quectel EC 25E?

I am using the dev compatible with the module.

If I solder a USB Keyboard to D+, D-, it detects but errors out -71 code

For Quectel EC 25E connected via mPCIE, it does not detect at all. Please suggest options to troubleshoot this further.

Drivers are loaded.