The 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 computer for installation. The converter adds one additional high-speed RS485 port instantly. Since power is supplied directly from the USB port, no external adapters are 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 noise resistance Protection features: TVS transient suppression, ESD protection, surge protection, short signal line protection, and short-circuit protection without damage 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 (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. Display differences may result in slight variation between the image and actual product color. 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 display differences may cause slight color variations. Measurement error allowed is +/- 1-3cm.