Use this usb power distribution switch TPS2552DBVR USB powered Ethernet switch from Texas Instruments to control which one of your devices draws power. It only needs a voltage of at least 2.5 V while not exceeding 6.5 V to effectively power your circuit. Its current limit is 1.2(Max) A. This component will be shipped in tape and reel packaging to allow for effective mounting and safe delivery. This USB powered network switch has an operating temperature range of -40 °C to 85 °C.