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Customer video for your reference: https://youtu.be/Q1btyPoL0GI
{{#ev:youtube|https://youtu.be/Q1btyPoL0GI}}
==FAQ==
Q1: What to do if you find the 2.4G Wi-Fi is not stable when use Raspberry Pi 4 with expansion board(like X825/X857/X862/X872) connected by USB3 connector?
A: 1.Please try to use WIFI 5G AP if you find the 2.4G signal is unstable, because we found that USB 3.0 high-speed transmission will interfere with the Raspberry Pi's 2.4G wifi signal. We think this is caused by the unreliability of the Raspberry Pi's wifi design. If the Raspberry Pi Foundation reserves the SMA IPEX antenna interface, everything will become easier. please refer to https://www.raspberrypiwiki.com/images/5/53/Usb3-frequency-interference-papers.pdf
2. You can also use a USB wifi dongle to connect to Pi's USB2.0 to solve the problem.