Connect 2 internal usb 30 devices internal card reader hard drive directly to a motherboard header connection the usb3smbadap6 internal usb 30 adapter cable extends a 20 pin motherboard usb 30 header connection and enables you to add 2 internal female usb 30 type a ports with the addition of the 2 internal usb 30 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