Before you flash your device, you may need to install drivers on your computer in order to communicate with it. Once installed, be sure to reboot your computer to verify the installation is complete.
A data cable will charge your device, but a charging cable will not be able to flash the device or communicate with it. Verify you have a data cable before proceeding. There's no official way to determine the difference in cables, trying out a few cables will be the best way to verify. If you've installed the appropriate drivers, you should see the results below.
You should see something like: `ID xxxx:xxxx Silicon Labs CP210x UART Bridge`, `ID xxxx:xxxx QinHeng Electronics USB Single Serial`, or `FIXME (WISBLOCK OUTPUT)`.
Navigate to `Apple Menu > About This Mac > System Report... > Hardware > USB`. You should see something like `CP210X USB to UART Bridge Controller`, `CH9102 USB to UART Bridge Controller`, or `WisCore RAK4631 Board`. If not download the appropriate drivers below.
Navigate to `Device Manager > Ports (COM & LPT)`. You should see something like `Silicon Labs CP210X USB to UART Bridge (COM5)`, `Silicon Labs CH9102 USB to UART Bridge (COM5)`, or `FIXME (WISBLOCK OUTPUT)`. If not download the appropriate drivers below.