The Chieftec CABLE-USB3T2 is an internal adapter cable for connecting a 19-pin USB 3.0 header to a 9-pin USB 2.0 header in a PC. It links these two types of internal connector when they need to be joined inside the computer.
One end has a 19-pin USB 3.0 male connector, and the other has a 9-pin USB 2.0 female connector. At approximately 10 cm (0.1 m) long, the cable provides a short route between headers inside the case.
Use this adapter for an internal USB connection where a USB 3.0 connection needs to meet a USB 2.0 connector.