Hardware Projects » M.2 (NGFF) WWAN modem USB breakout board

Wd do have a number of GND vias around the RF connectors and power supply as well as the USB/PCIe signals, but we don't have many in other arewas of the board. Particularly in the center and under the SIM slots in the north-eastern corner we should add more vias to ensure all GND planes are connected frequently.