The power supply and signal are fully isolated, providing enhanced anti-interference capability. 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 provides one additional high-speed RS4885 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 applications. Power supply: USB 5V Transmission distance: up to 1200 meters (9600bps) Chip solution: CH340E Communication protocol: pure hardware device, not dependent on software protocol Baud rate: up to 256000bps, supports bidirectional transmission and higher baud rates Power supply and signal are completely isolated, offering improved interference resistance Protection features: transient suppression, electrostatic ESD protection, surge protection, short-circuit protection on AB signal lines and power supply (short-circuit tolerant without damage) 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; USB interface supports hot swapping Automatically detects and controls data transmission direction without requiring handshake signals (such as DTR) or jumper settings, ensuring compatibility with existing communication software and hardware PCB board color inside the converter may vary randomly between batches; color selection is not available. 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: Other items not included. Lighting and monitor differences may cause slight color variations. Measurement error allowed: +/- 1-3cm.