RobotDyn - Pro Mini ATmega328， + A6-A7 pins - Enhanced version， Compatible for Arduino Pro Mini. (3.3V， 8MHz)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Microcontroller: ATmega328. Logic level: 5V(16MHz)/3.3V(8MHz) (Depending on model)</li><li>Bootloader pre-installed. For connecting to PC need use USB-TTL serial converter.</li><li>Digital I/O: 14 (6 PWM); Analog input 8</li><li>Input voltage: 5-9V</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51b-NU0D34L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51DyicJMdeL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/514eJ4jcyOL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51xjrkxjW6L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/519fWdgQyjL.jpg" noproxy>