Features: Using original imported FT4232HL chip, high speed communication is stable, reliable, good compatibility, you can expand 4 multifunctional ports through USB, convenient for users to expand or debug various industrial devices. Support USB to 2 isolated RS485/422 + 2 isolated RS485, integrated power isolation, can provide stable isolation voltage, no additional power supply at the isolation end. Integrated digital isolation, signal isolation, high reliability, strong anti interference, low power consumption,(transient voltage suppression tube), can effectively inhibit surges voltage and transient voltage in the circuit, and anti static. Self recovery fuse and protections diode, can ensure the current and voltage stable output, antiovervoltage and overvoltage, improve the impact resistance, automatic transceiver conversion circuit, to ensure that the USB end and different port can quickly and stably communication, non interference. External 9 LED indicator light, easy to check the power and signal sending and receiving status, high quality USB-B port material, plug and remove smoothly, solid and reliable, industrial metal cover, support wall mount and rail two installation methods, solid and beautiful, easy to install. Specifications: Operating Level: 5V Port: USB B Communication Rate: 300bps-921600bps Working Environment: -15 to 70℃ Length: Approx. 8.4cm/3.31in Support Operating Syestem: for Linux, Windows 11 / 10 / 8.1 / 8 / 7 Package Includes: 1x Isolated Adapter note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.