welcome to my store, Hope you have a pleasant shopping trip! Specifications:Microcontroller: ATmega2560Drive chip: CH340Power supply output: 5V/800mAPower supply input: 5VExternal power input (VIN) : 7-9V Power consumption: 5V 220mAInterface: Micro USBThe main control chip crystals: 16MWork voltage: 5VDigital interface: 54Simulation interface: 16Memory size: 256 KBRAM:8KbROM: 4KbInterface type: ISPWork Temperature: -40~85Work Humidity: 5%~95%RHSize:38*54mmPackage List:1 X ATmega2560-16AU USB CH340G MCU Development Board MicrocontrollerNotes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow 1-2cm slight dimension difference due to different manual measurement. It is an ATmega2560-16AU USB CH340G MCU Development Board Microcontroller Compatible with Mega2560. Embedded version Mega 2560 CH340G / ATmega2560 - Compatible with for Mega 2560 motherboard. The motherboard functions like the for Mega 2560. It is an embedded motherboard, but it is also stable and uses the original chip ATmega2560. (16 MHz) Mega PRO (embedded) 2560 CH340G / ATmega2560 - Connect to a computer via a microUSB cable. (almost all for smartphones) The board uses the chip CH340G as the converter UART-USB. When you work at a frequency of 12Mhz, you provide a stable data exchange result. (requires driver to be installed to the computer) You can power the board or power the pins through the MicroUSB connector. The voltage regulator (LDO) can handle input voltages from 6V to 9V (peak 18V) DC. The output current is 5V - about 800mA, 3.3V-about 800mA. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied. It is an ATmega2560-16AU USB CH340G MCU Development Board Microcontroller Compatible with Mega2560. Embedded version Mega 2560 CH340G / ATmega2560 - Compatible with for Mega 2560 motherboard. The motherboard functions like the for Mega 2560. It is an embedded motherboard, but it is also stable and uses the original chip ATmega2560. (16 MHz) Mega PRO (embedded) 2560 CH340G / ATmega2560 - Connect to a computer via a microUSB cable. (almost all for smartphones) The board uses the chip CH340G as the converter UART-USB. When you work at a frequency of 12Mhz, you provide a stable data exchange result. (requires driver to be installed to the computer) You can power the board or power the pins through the MicroUSB connector. The voltage regulator (LDO) can handle input voltages from 6V to 9V (peak 18V) DC. The output current is 5V - about 800mA, 3.3V-about 800mA. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied.