USB and Ethernet
The Iron Pi features two USB host ports, one Ethernet port, and one micro USB device port used to flash the main OS firmware.
The USB host ports each provide up to 500mA of power to connected devices.
The Ethernet port supports full duplex operation at 10 or 100 megabits per second.
The Firmware Programming port senses voltage from a connected host, and prevents the Iron Pi from booting from its flash when a host is connected.