Usb Connector Color Code February 23, 2019 How to tell what type of USB connector you have by color. In this article, I show how to tell what specification a USB connector is by it's color. www.geeksinphoenix.com Electric Dryer InstallationSingle Pole Light Switch With 3 Black WiresRelay Connection Diagram24 Volt Relay SwitchCan Light Wiring Diagram4 Way Light SwitchHouse Light Wiring3 Wire Thermostat Wiring Color Code