We have a BT/WiFi module on board, and/or external USB dongle WiFi can be added. 

USB WiFi is only supported on Cortex A7 and Cortex A8 platforms. 

With Cortex A9, there’s one WiFi/BT on board that uses an SDIO port. No USB Wi/Fi module is supported. 

5” A8 products must use a USB port WiFi dongle as there is no space on the PCB to weld a WiFi module. 

All products can support a USB dongle WiFi module because all products have a USB connector. You can add the WiFi/BT module while ordering.