The power supply and signal are fully isolated, providing stronger anti-interference capability and safer operation. USB to RS485 converter enables PC users to connect RS485 devices to systems with a USB interface. By connecting the converter to a PC, there is no need to open the chassis or power down the system for installation. The converter adds one additional high-speed RS485 port instantly. Since power is supplied via the USB port, no external power adapter is required, making it ideal for use with PLCs, printers, POS systems, and industrial control equipment. Power supply: USB 5V Transmission distance: up to 1200 meters (9600bps) Chip solution: CH340E Communication protocol: Pure hardware design, independent of communication protocols Baud rate: Up to 256000bps, supports bidirectional transmission and higher baud rates Power and signal are completely isolated, enhancing interference resistance Protection features: TVS transient suppression, ESD protection, surge protection, short signal line and short-circuit protection (short-circuit safe) Operating temperature range: -40°C to 80°C System compatibility: Supports hot swap; compatible with Windows 98, 2000, 2003, 2008, XP, WIN7, WIN8, WIN10, VISTA, Linux, and OS X systems; USB interface supports hot swapping Automatically detects and controls data transmission direction without handshake signals (e.g., DTR) or jumper settings, ensuring compatibility with existing communication software and hardware PCB color inside the converter may vary randomly by batch; color cannot be specified. Converter color may appear slightly different due to monitor display variations Color: Blue Material: PCB + Plastic + Metal Dimensions: 70 x 27 x 13mm Package Contents: 2 x USB to RS485 Communication Module Note: The package includes only the items listed. Other accessories are not included. Note: Lighting and monitor differences may cause slight color variations between the image and the actual item. Measurement tolerance: +/- 1-3cm