Features: USB power supply, no need for external power supply; compatible with USB 1.0/1.1/2.0, RS-422, and RS-485 standards; converts USB signals and protocol frames into balanced differential RS-422 or RS-485 signals and UART protocol. Enables bridging between a USB network and an RS-422/RS-485 network, functioning as a bridge device. Provides surge protection per line and 600W lightning protection. Utilizes TVS and thermistor dual protection technology to effectively resist lightning strikes and surge voltages, while maintaining low interelectrode capacitance for high-speed data transmission. Features internal automatic transmit/receive switching with no delay; unique I/O circuit automatically controls data flow direction without requiring handshake signals (such as RTS, DTR) or jumper settings, supporting full-duplex (RS-422) and half-duplex (RS-485) modes. Plug-and-play design ensures compatibility with existing communication software and interface hardware. Supports point-to-point and point-to-multipoint communication; allows connection of up to 32 RS-422 or RS-485 devices, with data rates from 300 to 128,000 bps. Includes power and data flow indicator lights for monitoring operation status. Supports USB to RS-422 and USB to RS-485 conversion. Lightweight and compact design for easy portability and use.Specifications: Material: ABS Color: Black, White (optional) Size: approx. 11 x 7 x 1 cm / 4.33 x 2.76 x 0.39 inches The RS-485/RS-422 terminals support the following networking modes: 1. Point-to-point four-wire full-duplex (RS-422) 2. Point-to-multipoint four-wire full-duplex (RS-422) 3. Point-to-point two-wire half-duplex (RS-485) 4. Point-to-multipoint two-wire half-duplex (RS-485) For optimal performance in full-duplex or half-duplex configurations, a termination resistor (120 ohm, 1/4W) is recommended at the end of the line to minimize signal reflection and interference.Package List: 1 x Converter 1 x CD