Raspberry Pi USB Power Adapter with Micro USB Cable w/ ON/OFF Switch 5V 2.1A Unique compact design maximizes wall socket space Switching 110V-240V AC Input Voltage Output Voltage: 5.0V DC=2.1A 2 USB output ports : 1 (OTHERS) rated at 1.0A and 1 (TABLETS) rated at 2.1A, please connect your RPi to the TABLET port. CONVENIENCE ! CONVENIENCE ! CONVENIENCE !