Add an extra serial port to the back of your PC from your motherboard. Easy to use and install Connects to your motherboard and adds an additional serial port to the back of your PC Backed by StarTech.com’s lifetime warranty This 9-pin Serial to 10-pin Header Slot Plate adapter features one DB9 male connector and one IDC10 connector. The adapter is constructed of high quality components and expertly designed to ensure durability and reliability. Please refer to the Technical Specifications to ensure your motherboard is compatible with this product. What’s in the box 16in (40cm) 9 Pin Serial Male to 10 Pin Motherboard Header Slot Plate