The Logilink CA0020 is a USB 2.0 to RS-232 serial adapter that is used for connecting serial devices such as modems, digital cameras, scanners, label printers, and ISDN terminal adapters to a USB port on a host system. The CA0020 allows for data transfer rates of up to 230 Kbps. It is designed for use with standard serial devices, Microsoft Windows based PC, and Mac OSX. It is also compatible with USB 1.1 ports. The adapter features an LED indicator to indicate power and data connection. The CA0020 is powered via the USB connection and requires no external power supply.