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, this device converts USB signals and protocol frames into balanced differential RS-422 or RS-485 signals and UART protocol. It enables bridging from a USB network to an RS-422/RS-485 network, functioning as a bridge device. This series provides surge protection per line and 600W lightning protection. Adopts TVS and thermistor dual lightning and surge protection technology: Effectively resists lightning strikes and surge voltages generated on the line from various causes, while maintaining low interelectrode capacitance to ensure high-speed transmission over RS-422/RS-485 interfaces. Converter features internal no-delay automatic transmit/receive switching: Unique I/O circuit automatically controls data flow direction without requiring handshake signals (such as RTS, DTR, etc.) or jumper settings, supporting full-duplex (RS-422) and half-duplex (RS-485) mode conversion. Plug-and-play design ensures compatibility with existing communication software and interface hardware. Supports point-to-point and point-to-multipoint communication: Point-to-multipoint configuration allows connection of up to 32 RS-422 or RS-485 interface devices. Data communication rates range from 300 to 128,000 bps. Equipped with power and data flow indicator lights for monitoring operation and fault conditions. Supports USB to RS-422 and USB to RS-485 conversion. Lightweight and compact: Small size, light weight, simple and practical design. Specifications: Material: ABS Color: Black, White (optional) Size: approx. 11 x 7 x 1 cm / 4.33 x 2.76 x 0.39 inch The RS-485/RS-422 terminals support the following four 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) When using the converter in full-duplex or half-duplex wiring configurations, a termination resistor (120 ohm, 1/4W) is required at the end of the line to prevent signal reflection and interference. Package List: 1 x Converter 1 x CD