Motherboard 19pin USB 3.0 Header 1 to 2 USB 2.0 9Pin Female Extension HUB Connector Adapter Port Multilier USB 2.0 HUB chipset inside, and support 480Mbps speed. Support DC 5v 500ma current for each port. Desktop 19-Pin USB 3.0 HUB to USB 2.0 9 pin Connector Adapter Port Multilier It can extend your motherbord USB 3.0 19pin connector to 2*USB 2.0 9pin connectors.