The Okystar OKY3409-1 is a USB-UART converter module that consists of a USB Type-B Mini connector. This module is designed to facilitate communication between different peripherals when a computer is not available. It supports 230kbps data rate and features various ports for data transmission, such as RXD, TXD, and GND. The module is powered by USB and can be easily connected with any system. It has an LED indicator and ESD protection, making it a reliable and durable device. The OKY3409-1 is suitable for use in automotive, industrial, monitoring, and automation applications.