1MAIN FUNCTIONS: Converter is used to provide a connection between USB and traditional RS 232 serial port 2SUPPORTED OPERATING SYSTEMS: USB to RS232 converter support for Windows 2000, ME, 98SE, for Windows XP(32 or 64 bit), for Windows(32 or 64 bit), for Windows 7(32 or 64 bit), for Windows 8 or 8.1(32 or 64 bit), for Windows 10 and 11(32 or 64 bit), for OS X 10.6 and later, for Linux 2.4 and later 348IN FLEXIBLE CABLE: The integrated and flexible 48in USB 2.0 cable is suitable for most installation scenarios 4TECHNICAL PARAMETERS: The USB to serial adapter support USB 1.1 and is compatible with USB 2.0 and USB 3.0 ports. The RS 232 serial connector use the USB standard widely supported by most laptops and desktops today to connect RS 232 serial devices, such as modems or printers 5EASY SETUP: USB to serial 9 pin converter cable is easy to install in just a few seconds. Plug into your computer, and the COM port and baud rate can be modified as needed 6SCOPE OF APPLICATION: USB to RS232 serial converter is widely used for cash register, writing pad, access control system, barcode printer, scanner, PLAM, CNC machine, PLC, industrial instrument 1 x USB to RS232 Converter