WIFI's USB interface Universal Serial Bus (English: Universal?Serial?Bus, abbreviation: USB) is a serial bus standard for connecting a computer system to external devices, and a technical specification for input and output interfaces.
WG233
USB Interface WiFi Modules: WG209, WG211, WG217, WG233 for a wide variety of gateways, set-top boxes, gaming consoles, printers, IP cameras, and other products where these host processors were not initially available for WiFi functionality.
WG228
The SDIO interface of WIFI is an interface developed on the basis of SD memory card interface, SDIO interface is compatible with the former sd memory card, and can be connected to the SDIO interface device, at present according to the SPEC of the SDIO protocol, the total class of the devices supported by the SDIO interface are bluetooth, network card, TV card, etc. SDIO Interface WiFi Module: WG228, for SDIO?WiFi devices with extended wireless LAN communication capabilities.