Keyestudio V4.0 Arduino Uno Development Board

The processor core of Keyestudio V4.0 development board is ATMEGA328P-PU , fully compatible with ARDUINO UNO REV3.
It has 14 digital input/output pins(of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, 1 ICSP header, and a reset button. The built-in ICSP port can burn the firmware for ATMEGA328P-PU directly. We can plug in power by USB wire, DC head and Vin GND pins.

Specifications:

• Microcontroller: ATMEGA328P-PU
• USB serial chip：CP2102
• Operating Voltage: 5V
• Input Voltage (recommended):DC 7-12V

Wiki page: Here