WWAN2USB_FM350

Function Description:
DIY 5G CPE Adapter Board/5G Module to USB Adapter Board.
Tested download speed: 300Mbps+.
Open Source License:
CC BY-NC-SA 4.0.
Notes:

The Type-C interface only supports USB 3.0 on one side. Different LED colors indicate the orientation: pinkish-purple for USB 3.0, yellow for USB 2.0
. The antenna spacing is too small; please select an antenna with a diameter <12mm or use an antenna extension cable (antenna panel hole spacing adjusted to 14mm).
The heat dissipation space is approximately 10.6mm high, 48mm wide, and 60mm long. The heatsink and fan must

be smaller than these dimensions. Issues:
I've been busy lately and won't be making further modifications for now. Welcome to continue sharing a more perfect version.

The inductor makes a whistling sound under high load; this may be due to an unreasonable inductor/power supply design. The order was placed hastily;
a MUX chip needs to be added.
The LED placement is slightly inward, supporting reversible Type-C interface , and requires

further adjustment.
This project has been verified, but the following modifications were made after verification:

antenna spacing was increased, the position of some panel interfaces was slightly adjusted
, the outer contour of the adapter board was adjusted and copper plating
was reapplied, and the soldering stud pad connection method was changed to divergent for easier soldering.

Acknowledgements:
This project is based on @炽羽渡尘's project with slight modifications. The positions of the SIM female connector and power supply were adjusted to fit the housing.
References:

https://blog.siriling.com:1212/2023/04/12/5g-modem-fibocom-fm350-gl/
https://blog.csdn.net/qq_41354243/article/details/140923865
https://oshwhub.com/yizhidianzi/gl3224-usb3-0-sdio
https://www.waveshare.net/wiki/RM500U-CNV