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VIM4 RM500Q 5G NR Module


This page will introduce the usage of RM500Q 5G NR module.You will learn how to use the 5G module on Khadas SBC.


  • Disconnect the Khadas SBC power port cable.
  • Insert the 5G module board into the M.2 slot on M2X WWAN Extension board.
  • Insert the M2X WWAN Extension board into the SBC.
  • Insert a valid Nano SIM card on the 5G module.


Upgrade System

You need to Upgrade System to latest version.

Enable PCIe Port (VIM3 Only)

If you use the VIM3 board, you need to enable the PCIe function.

Khadas VIM3 PCIe/USB3.0 share one data port,and the default mode is USB 3.0.So when we need to use 5G module, we need to switch it to PCIe port.

$ echo 1 > /sys/class/mcu/usb_pcie_switch_mode
$ sudo reboot

Reboot the system to bring changes into effect.

Disable ModemManager

As the ModemManager doesn't support this 5G modem, so you have to disable it and use Quectel QConnectManager to connect to the internet.

$ sudo systemctl stop ModemManager.service
$ sudo systemctl disable ModemManager.service

Setup Quectel QConnectManager

You need to use Quectel QConnectManager to connect to the internet.

Get Source Code
$ git clone
Compile the Source Code
$ cd quectel-CM
$ make

Configure the Network

Connect to Internet

Execute the command below to connect to internet.

$ sudo ./quectel-CM &
Check the Network Node
$ ifconfig rmnet_mhi0.1
rmnet_mhi0.1 Link encap:UNSPEC  HWaddr 02-50-F4-00-00-00-00-00-00-00-00-00-00-00-00-00  
          inet addr:  Mask:
          inet6 addr: fe80::50:f4ff:fe00:0/64 Scope:Link
          UP RUNNING NOARP  MTU:1500  Metric:1
          RX packets:1089360 errors:0 dropped:0 overruns:0 frame:0
          TX packets:176581 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1521449058 (1.4 GiB)  TX bytes:57525792 (54.8 MiB)

If you can see the IP address inet addr mean the network is fine.

Setup DNS

You also need to setup the DNS.

$  echo "nameserver" | sudo tee /etc/resolv.conf

Check Network

$  ping -I rmnet_mhi0.1

Check Whether use 5G Network


It will support automaticly.

2022/09/27 03:44 · ivan · 4 Comments
2023/01/10 20:26 · nick
Last modified: 2023/01/10 20:27 by nick