Cable Matters USB to Serial Adapter Cable (USB to RS232 / USB to DB9) 6 Feet USB to RS232 adapter cable connects from the USB-A port of a computer to a device with a female DB9 port; USB bus-powered cable connects to devices for configuration or programming MALE TO MALE serial to USB cable provides a convenient solution for communicating with equipment that require a DB9 connector; Use a DB9 mini gender changer (sold separately) if the fixed hex screws will not mate with the equipment port SIMPLE INSTALLATION of USB A to serial adapter using the drivers on the included CD or available for download from Cable Matters; Connect a null modem adapter (sold separately) to directly connect two computers with serial cables WINDOWS & MAC COMPATIBLE with Windows 2000/XP/Vista/7/8/10 and macOS 10.6 and above; Additional proprietary software may be required for some equipment models RS-232 COMPATIBLE console cable is required for many types of equipment including a CNC machine, GPS, telescope, Set-top box, Cisco network switch, sewing machine and more Windows 10/8/7/Vista/XP//2000 (Windows 7,8,10 should auto detect and install the drivers) macOS X 10.6 and above (Both computer and device must support macOS) Linux kernels 2.4.31 and later