SMD Arduino Uno R3 Development Board SMD Chip Version Microcontroller Based On ATmega328 With USB Cable For Arduino With Cables Electrical Circuitry & Parts

VIN: The input voltage to the Arduino board when it’s using an external power source (as opposed to 5 volts from the USB connection or other regulated power source). You can supply voltage through this pin, or, if supplying voltage via the power jack, access it through this pin.
5V: The regulated power supply used to power the microcontroller and other components on the board. This can come either from VIN via an on-board regulator, or be supplied by USB or another regulated 5V supply.
3V3: A 3.3 volt supply generated by the on-board regulator. Maximum current draw is 50 mA.
GND: Ground pins.

Name: SMD Arduino Uno R3 Development Board SMD Chip Version Microcontroller Based On ATmega328 With USB Cable For Arduino With Cables Electrical Circuitry & Parts
Brand: No Brand
SKU: 125719612_BD-1045852978
Availability: InStock