==User Manual==
For Raspberry Pi4+X880+X880-A3+X880-C1:
https://youtu.be/LR-8xSe6670
{{#ev:youtube|https://youtu.be/LR-8xSe6670}}
For Raspberry Pi4+X880+X880-A1-A2+X880-C1:
https://youtu.be/RvBILJGetJ4
{{#ev:youtube|https://youtu.be/RvBILJGetJ4}}
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