Does anyone has integrated RAK5146 with arduino portenta?

i m trying to integrate RAK5146 Mini-PCIe form factor concentrator on my Arduino portenta max carrier+ arduino portenta H8 but still failing . Seems when docker start the board is not recognized .I understand RAK5146 should be connected on USB. Does it means RAK5146 can be plugged directly on the arduino board and need to be connected on USB pour with an adapter ?