SUPPORTED OPERATING SYSTEMS: The USB to serial converter adapter is compatible with Windows Mac operating systems. Windows 10, 8.1, 8, 7. Mac OS 10.11, 10.10, 10.9, 10.8, 10.7, 10.6USB: The USB to serial adapter supports USB 1.1 it is compatible with USB 2.0 USB 3.0 ports.NDAA COMPLIANT: With our NDAA compliant USB to Serial 9-Pin Converter Cable, you can plan install networking solutions that Government customers dem today (U.S. Canada Only)RELIABLE TECH SUPPORT: Our team of advisors, support tech experts are English speaking, available for all your needs during normal business hours. We take pride in being there for our customers.RS-232 SERIAL CONNECTOR: Connect RS-232 serial devices, such as modems or printers, using the widely supported USB stard found in most laptops desktops today.EASY SETUP: Simple installation in seconds of the USB to Serial 9-Pin Converter Cable. Insert the your computerFLEXIBLE CABLE: Integrated flexible 540mm (21 in.) USB 2.0 cable accommodates most installation scenarios. Total cable length of 25 inches when including the RS-232 (9pin) USB Type A.MANUFACTURER PROTECTION: We st by the quality of our products.The TU-S9 USB to Serial 9-Pin Converter Cable is backed supported with 2 years of Manufacturer Protection.