YCS Basics 6 Foot USB To DB9 9 Pin Serial Cable (RS232) With DB25 25 Pin Serial Adapter Includes one USB 2.0 to 9-pin Serial Male cable (six feet) & one 9-pin Serial Female to 25-pin Male Adapter Includes Driver CD and instructions For use with computers without serial ports Compatible with Windows Win 98 / ME / 2000 / XP / Vista / Win 7 / Win 8 / Win 10 YCS Basics one year limited warranty!