Cable features a USB-A end and an RS232 end, allowing you to connect your computer to serial devices like POS terminals, serial modems, industrial equipment and more Enables the addition of legacy functions to modern laptops, computers and services that lack an RS 232 port Cable length: 0.43m (1.4ft.) Transfer speeds of 921.5KB/s enable rapid, efficient communication, between connected devices USB-powered design lets this cable function without a power adaptor Compatible with an array of operating systems, including Window 7 to 10, Windows Server 2016, Mac OS Sierra, Mac OS El Capitan, Mac OS Yosemite, and Linux