This is where USB to DB9 Serial Adapter comes in to play. USB to serial adapter with FTDI chip is designed for connecting serial devices such as DB9 equipped PC. DTECH USB to 9 Pin Male RS232 Serial Port Cable 16 Feet with FTDI Chip Supports Windows 10 8 7 and Mac Linux.Computers & Accessories Serial Adapters DTECH USB to 9 Pin Male RS232 Serial Port Cable 16 Feet with FTDI Chip Supports Windows 10 8 7 and Mac Linux DTECH USB to 9 Pin Male RS232 Serial Port Cable 16 Feet with FTDI Chip Supports Windows 10 8 7 and Mac Linux