GearMo FTDI CHIP 232RL Chip Controlled USB to RS232 Professional Serial Adapter Designed For Windows 7 and 10, Mac, and Linux This is the best professional USB to Serial Adapter made Extremely High Quality and optimized for Windows Vista, Windows 7 and 10, this USB Serial adapter is suitable for most applications, including industrial, commercial and any general office computer device. It is also fully supported by MAC OS and Linux Designed with a high performance quality processor FT232BL from FTDI Semiconductors chip which makes this USB serial adapter one of the most reliable and professional USB serial adapters on the market. This model has a Lifetime Warranty against MFG. Defects. The USUT880 USB to Serial RS232 Adapter is powered from the computer's USB host port; no additional external power source is needed. The RS232 end is a standard 9-pin D-sub connector for easy connection of standard serial cables. Aside from the high-end quality processor chip FT232BL from FTDI, the serial adapter also includes a ZT232E RS232 transceiver from ZyWyn USA.