The power supply and signal are fully isolated, with stronger anti-interference ability. USB To RS485 converter allows PC users to connect RS485 devices to systems that use USB interface. No need to open the chassis or turn off the PC for installation. Instantly gets one extra high-speed RS485 port, powered by USB port without cumbersome adapters, suitable for PLCs, printers, POS system and industrial use. Power supply: USB 5V; Transmission distance: up to 1200 meters (9600bps); Chip solution: CH340E; Baud rate: up to 256000bps. Features transient suppression protection, electrostatic ESD protection, surge protection, and short-circuit protection. Temperature range: -40°C to 80°C. Supports hot swap and various systems including Windows, Linux. Automatically controls data transmission direction without handshake signals or jumper settings. Color as shown in the picture; Material: PCB + plastic + metal; Size: 70x27x13mm. Package Contents: 2 * USB to RS485 Communication Module. Note: Light and display differences may cause color variations; measurement error is +/-1-3cm.