Realtek RTL8723DE 802.11b / g / n PCIe Adapter: Setting Up WiFi on macOS Catalina

If you're experiencing difficulties setting up your Realtek RTL8720a/RTL8723ae/RTL8723alc wireless adapter under macOS High Sierra or later, this guide is for you.

The first step in configuring the Wi-Fi card is to download and install the appropriate kext files. The most commonly used method involves using either the Rehabilitated-Realtek or RealtekRTL_Nic_10.x.x.pkg package from GitHub:

1. Download one of these packages based on your operating system version:

- For High Sierra (10.13): https://github.com/RehabMan/os-x-firmware/releases/download/a5c7e8d/mac80211-9.0.15a2.tar.gz

- For Mojave (10.14) and later: https://github.com/Pikerhoudt/DTraceOne/blob/master/FETCHER/fetch.sh

2. After downloading, extract the tarball using Terminal with the following command:

`tar xvf mac80211-9.0.15a2.tar.gz`

3. Navigate to the extracted directory and run these commands one by one (you may need root privileges for some):

```

sudo ./install.sh

reboot -nrf

```

4. Once your system boots up, you should now be able to see your Wi-Fi network under System Preferences > Network.

If this doesn't work as expected or if you encounter any issues during the process, feel free to leave a comment below and I'll do my best to assist you further!

Realtek rtl8723de 802.11b/g/n pcie adapter