With a clock frequency of 16 MHz and 32 KB flash memory, the converter can be easily connected to a PC without risk.Plated connectors for better contact; 20 digital input/output ports D0 ~ D13, A0 ~ A5; 8 analogue inputs A0 ~ A7The Nano board offers the functionality of for Baoarduino and Mini+USB readboards at small size, low power consumption and a range of analogue and digital inputs and outputs suitable for most applications.The nano board can be connected to Mini-B USB, an unregulated external 7-12V power supply (pin 30) or a regulated external 5V power supply (pin 27) to power it. The power supply can be set automatically.Material:Plastic + Metalcolour:blue+blackPackage Contents:1 * nano boardOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.