Serial Port Adapter with LED Indicators for Computer Connectivity High quality brand new EASY TEST - Easy test RS-232 host to device link. With a full LED, dual color display, tester output. This will make testing your connections with ease.WHY ? Your Trusted Partner based in the USA, Providing Advanced Engineering, Highly Reliable and Superior Built Products to handle the most demanding industries for over 20 years. Reach out to us for CAD, Mechanical Drawings and, Data Sheets.COMPATABILITY - With support on multiple OS platforms this makes our USB RS- 232 very versatile. Supported OS platforms are Windows 7, 8, 10, and 11 as well as Linux and MacOS 10.XUSB TO RS232 SERIAL 5ft in length serial adapter. Connect legacy DB-9 serial communications devices to a modern computer with USBOs compatibility: Windows 7, 8, 10, and Windows 11 as well as Linux and MacOS 10.X