The power supply and signal are fully isolated, providing stronger anti-interference capability and safer operation. USB to RS485/422 converter enables PC users to connect RS-485/422 devices to systems with a USB interface. By connecting the converter to a PC, there is no need to open the chassis or shut down the computer to install additional hardware. The converter adds one high-speed RS-485 or RS-422 port instantly. Powered directly from the USB port, eliminating the need for external power adapters. 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 automatic data transmission direction control for higher baud rates Power and signal are completely isolated, enhancing interference resistance Protection features: TVS transient suppression, ESD protection, surge protection, AB signal line short-circuit protection, and power short-circuit protection (non-destructive under short circuit) Operating temperature range: -40°C to 80°C System compatibility: Supports hot swap; compatible with Windows 98, CE, 2000, 2003, 2008, XP, WIN7, WIN8, WIN10, VISTA, Linux, and MAC OS X. USB interface supports hot swapping Automatically detects and controls data transmission direction without requiring handshake signals (e.g., RTS, DTR) or jumper settings for mode switching, ensuring compatibility with existing communication software and hardware PCB color inside the converter may vary randomly by batch; color may also differ slightly due to monitor display variations Color: Blue Material: PCB + Plastic + Metal Dimensions: 70 x 27 x 13mm