BPI-M4 M.2 PCIe test: uses TP-link TG-3468 Gigabit Ethernet PCIE card (M.2 to PCIE)

Banana Pi BPI-M4 uses TP-link TG-3468 Gigabit Ethernet PCIE card (M.2 to PCIE)

WiFi function test video:

code on github: