, high quality Features: All original chips are used. Industrial protection: TVS transient suppression protection, electrostatic ESD protection, surge protection, short circuit protection between A and B signal lines and power supply (short circuit without damage). Transmission distance up to 1200 meters (tested at 9600bps). Supports baud rate up to 921600, higher than standard 115200, enabling faster data transmission. Multi-system support with hot swap capability; compatible with Windows 98/CE/2000/2003/2008/XP/WIN7/WIN8/WIN10/VISTA, Linux, and MAC OS X systems. USB interface supports hot swapping. Automatically detects and controls data transmission direction without handshake signals such as RTS or DTR. Mode conversion requires no jumper settings, ensuring compatibility with existing communication software and hardware. Equipped with TXD and RXD indicators. Line converter only; other accessories shown in images are not included. Specifications: 1. Power supply: USB 5V 2. Transmission distance: up to 1200 meters (at 9600bps) 3. Chip solution: CH340 4. Communication protocol: Pure hardware device, independent of communication protocol 5. Baud rate: Up to 921600bps, supporting high-speed bidirectional transmission 6. Protection features: TVS transient suppression, electrostatic ESD protection, surge protection, short-circuit protection on A/B signal lines and power supply (non-destructive under short circuit) 7. Operating temperature range: -40°C to 80°C 8. Provides external 5V power output with fuse current limiting 9. 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 swap 10. Automatic data direction control without handshake signals (e.g., RTS, DTR); mode switching without jumpers ensures compatibility with existing software and hardware 11. Dimensions: Approx. 70 x 27 x 13mm (2.76 x 1.06 x 0.51 inches) 12. Item type: Line Converter 13. Material: PVC + Glass Fiber Sheet 14. Quantity: 1 piece Note: 1cm = 10mm = 0.39 inch. Please allow 0–1cm error due to manual measurement. Ensure you are comfortable with this before purchasing. Due to monitor display differences, the image may not reflect the actual color of the product. Thank you. Package Includes: 1 x Line Converter