Dongle usually works because the chipset shouldn't be too uncommon. What I was referring to was the Wi-Fi chipset that use SDIO interface rather than PCI/PCIe/U

Dongle usually works because the chipset shouldn't be too uncommon. What I was referring to was the Wi-Fi chipset that use SDIO interface rather than PCI/PCIe/USB (like the mentioned RTL8723BS, which is a Bluetooth + Wi-Fi combo module used in few tablet models due to its low power usage).