CH340G Replace ATMEGA16U2Microcontroller:ATmega2560Operating Voltage:5VInput Voltage (recommended):7-12VInput Voltage (limits):6-20VDigital I/O Pins:54 (of which 15 provide PWM output) Analog Input Pins:16 DC Current per I/O Pin:40 mA DC Current for 3.3V Pin:50 mA Flash Memory:256 KB of which 8 KB used by bootloader SRAM:8 KB EEPROM:4 KB Clock Speed:16 MHz color: blue Material: metal + PCPackage Contents:1*ATmega2560-16AU CH340G Board1*USB lineOnly 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.