StarTech.com 13ft (4m) 2-Port USB to Serial Adapter Cable Interchangeable DB9 Screws/Nuts COM Retention USB-A to DB9 RS232 FTDI Level-4 ESD Protection Windows/macOS/ChromeOS/Linux - Rugged TPE Construction

Add two RS232 serial ports to a laptop or desktop. using an available USB-A portAdd RS-232 serial communication support to USB-A enabled Data Terminal Equipment (DTE - e.g.. desktop or laptop). using this 13ft (4m) straight through 2-Port USB to Serial Adapter Cable.Serial Port ExpansionThe Dual-Port USB Serial Adapter adds two RS-232 serial DB/DE-9 (male) connectors to a desktop or laptop via a single USB Type-A port. Secure the adapter to a serial device. using pre-installed and removable slotted D-Sub thumbscrews or install the included DB-9 Nuts for compatibility with other serial peripheral devices or cables.LED IndicatorsData transmission and reception LED indicators for each port on the adapter provide real-time monitoring of port activity. The USB LED indicates when the adapter has successfully enumerated on the desktop or laptop. All the LEDs aid with diagnostics and troubleshooting.Seamless ConnectivityThe adapter is compatible with Windows. macOS. ChromeOS. and Linux. Driver