Arduino Nano V3.0 unsoldered CH340G Mini USB

Microcontroller: Atmel ATmega168P-AU

Clock Speed: 16 MHz

Digital I/O Pins: 20 (RX, TX, D2 ~ D13, A0 ~ A5)

Analog Input Pins: 8 (A0 ~ A7)

PWM Output Pins: 6 (D3, D5, D6, D9, D10, D11)

Serial Communication: 1 TTL-level RX/TX port

Supported Downloads: Serial and ISP (In-System Programming)

Power Supply (External): 3.3V ~ 12V DC

Battery Support: Supports direct connection of Li-ion polymer battery via VCC pin

USB-to-Serial Interface: (not specified, can be added if known)