Raogoodcx 3Set Mini USB Arduino Nano V3.0 ATMEGA328P Module CH340G 5V 16M Micro-controller board with Dupont Jumper Wires I/O Pins:14 Digital, 8 Analog, Operating Voltage:5 V Flash Memory - 32 KB (2 KB used by bootloader) DC Current per I/O Pin:40 mA, Atmel ATmega328 microcontroller Mini Nano V3.0 is compatible with win7 win8.