Connect 2 internal USB (Universal Serial Bus) 3.0 devices (internal card reader, hard drive) directly to a motherboard header connection. The USB3SMBADAP6 Internal USB (Universal Serial Bus) 3.0 Adapter Cable extends a 20-pin motherboard USB (Universal Serial Bus) 3.0 header connection & enables you to add 2 internal female USB (Universal Serial Bus) 3.0 (Type A) ports. With the addition of the 2 internal USB (Universal Serial Bus) 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 (Universal Serial Bus) 3.0 ports. This USB (Universal Serial Bus) 20-pin Adapter offers 6-inches in cable length, which lessens strain on the motherboard header, ensuring a reliable, long-lasting connection.