19 pin USB 3.0 motherboard adapter offers a throughput of up to 4.8Gbps when used with a USB 3.0 host and device , which astounding the capability of USB 2.0 (480Mbps).USB 3.0 header to usb 2.0 adapter cable use molded-strain relief construction for flexible movement, durability, and fit.USB 3.0 to USB 2.0 motherboard adapter cable complies with fully rated cable specification using braid-and-foil shield protection.USB3.0 technology of USB 3.0 motherboard adapter is similar to PCI 2.0(5 Gbit/s) It uses 8 B10B encoding,linear feedback shift register (LFSR) scrambling for data, spread spectrum.Let your USB 3.0 motherboard adapter 19 pin device connected the USB 2.0 9 pin motherboard.Colour: blackMaterial: PVCSize: length: about 10cmPackage Contents:4 x Motherboard USB conversion cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.