The USB3SMBADAP6 is internal USB 3.0 adapter cable extends a 20-pin motherboard USB 3.0 header connection and enables you to add 2 internal female USB 3.0 (Type A) ports. With the addition of the 2 internal USB 3.0 ports, you can connect your internal devices (internal card reader, hard drive, etc.) directly to your motherboard, which allows for a cleaner installation, avoiding the need to run your cables outside the system case to external USB 3.0 ports. Backed by our lifetime warranty, this USB 20-pin Adapter offers 6-inches in cable length, which lessens strain on the motherboard header, ensuring a reliable, long-lasting connection.