PCB Dimensions: 26.5* 15.6mm
With 3.3V and 5V dual power output
With three LEDs: power indicator, data reception indicator, data transmission indicator, and working status indicator
With a self-recovery fuse. In the event of an accidental short circuit, it can effectively protect your computer's USB port and downloader.
With reset signal output, etc., directly to the Arduino board for Promini download!


Features:

Includes a USB transceiver, without an external circuit device.
Includes a clock circuit and a power-on reset circuit.
Meets the USB 2.0 specification requirements.
SUSPEND pin supports USB suspend state.
Asynchronous serial data bus compatible with all handshake and modulation controller interface signals.
Supported data format is 8 data bits, 1 stop bit, and parity bits.
Contains a 512-byte receive buffer and a 512-byte transmit buffer.
Supports hardware handshaking or X-ON/X-OFF.

Supported operating systems:

Windows XP/2000/7/8.1/10
macOS
Linux 2.4.0 or later