we currently have a Realtek 1x1 Wi-Fi based Toshiba module on the current board. It is a miniPCIe module so can be slotted in & out. The plan is to ship with this part though it may be part of a future stretch goal for an upgrade so stay tuned!
5V power is insufficient to power the device IF all the Ethernet ports are running with a Wi-Fi cards and the SATA interface. It can run the base board ethernet functions but when loaded with with Wi-FI and SATA you need the external 12V powersupply which is why we made the power supply standard on the higher tiers. Some backers also have the power supplies or uSD cards on hand
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