CONNECTOR TYPE: USB 3.0 19 Pin Female To USB 2.0 9 Pin Male.Allows you to connect internal USB devices directly to the motherboard header connection. FEATURES:SinLoon Motherboard Cable can let the USB 3.0 19 pin device connected to the USB 2.0 9 pin motherboard , such as cd-rom , floppy drive panel. HIGH QUALITY:Elastic PVC shell, good flexibility, not easy to break, strong and durable. The double shielding of braided copper mesh and aluminum foil can greatly reduce electromagnetic interference. COMPATIBILITY: 19 pin usb 3.0 Female to 9 pin usb 2.0 Male motherboard cable,Backward compatible with USB2.0, lower power consumption, higher protocol efficiency and transmission speed. FUNCTION: Converter 19Pin USB3.0 interface on the motherboard or PCIE adapter card to the front panel, to get two standard USB3.0 interfaces on the front of PC case, convenient for users to use.