This 18in internal usb idc cable features two 5 pin usb motherboard header connectors allowing you to connect a front panel usb hub or card reader directly to the motherboard header ports this cable provides a solution for connecting multi function front panels or any device that relies on internal usb ports directly to the motherboard or expansion card offering usb an idc header connection without having to install additional cards or run cables externally to the rear ports features 18in in