The power supply and signal are fully isolated, with stronger anti-interference and use USB To RS485/422 converter allows PC users to connect their -485/422 devices to use USB interface. By attaching the converter to a PC, it will no be necessary to open the chassis or turn off the PC to install the hub. With the converter, the instantly gets one extra high-speed -485 or -422 ports. In addition, since the power is derived from the USB port, there are not any cumbersome power adapters. This makes the converter especially suitable for PLCs, printers, system and industrial . Power supply: USB 5V Transmission distance: up to 1200 (9600bps) Chip solution: CH340E Communication protocol: pure hardware device, not subject to agreement rate: up to 256000bps, supporting transmission to support higher rate The power supply and signal are completely isolated, and the anti-interference is stronger Protection: transient suppression protection, electrostatic ESD protection, surge protection, short signal and short-circuit protection with power supply (short-circuit without burning) Temperature range: -40 C - 80 C Support system: support hot swap, support for win98 for for 2000 for 2003 for 2008 for XP for WIN7 for WIN8 for WIN10 for VISTA for LINUX for system, USB interface can be hot swapped Automatically identify and control the data transmission direction, without any handshake signals (such as , DTR, etc.) without jumper settings to achieve mode conversion, to compliance with the existing communication software and interface hardware. Different batches, the color of the PCB board inside the converter is random, 't accept the specified color; the computer display is different, the converter color . Colour: blue Material: PCB+plastic+metal Size: 70x27x13mm Package Contents: 1 * USB To RS485 RS232 Converter Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.