Easily and quickly add additional serial ports to your system through the USB port. The Multi-2/micro USB deliver maximum performance up to 921.6Kbps. Combine that with the need for fewer components and you get costeffective and reliable connections to your serial devices. The USB to serial multi-ports support most Windows and Linux operating systems and include 15,000 volt surge suppression eliminating blown ports. The Multi-2/micro USB includes a 2 port panel with a DE9 connector and are available in two models, RS232 and RS422/RS485. Simply plug in the USB connector and you have a COM port to connect modems, printers, bar-code scanners or other any serial devices.