SainSmart Digital Analog Module V5 Sensor Shield Servo Motor for Arduino UNO MEGA Duemilanove Buckled Analog Port:Handy, solid connection to 6 Analog inputs with VCC/GND Digital IO port:13 ports prepared to digital modules or servos Analog IO Port:2.54 grid male pin header connections Buckled Communication Port:Selectable between I2C and UART