Product description With the popularity of USB3.0, more and more computer cases offer a 19-pin USB3.0 interface on the front of the case, but the old motherboards do not support USB 3.0 or have no 19 pin interface! At this time, you can convert the PCI-E signal via the PCI-E slot of the motherboard into the 19-pin USB 3.0 interface and 2 rear USB 3.0 interfaces and then insert the 19-pin of the panel into the expansion card, so it offers the front super high-speed USB 3.0 interface Specifications: Compatible with PCI Express specification version 2.0. Compatible with the USB 3.0 SuperSpeed specification version 1.0. Please note the xHCI specification version 1.0. Master Chip:Renesas UPD720201 Chipset Applies to all PCI-E slots. The highest transfer rate is up to 5 Gbps, which is much higher than 480 Mbps of USB 2.0, which is up to 10 times. Backwards compatible with USB2.0, USB1.1, USB1.0. Transfer rate: 5000/480/12/1.5Mbps USB output: up to 5V 2A (increased current type). Built-in extended power interface Supports USB hot plug function Supports XP / 2003 / Vista / win7 / win8 / win10. Hardware Requirements: This product is a desktop PCI-E expansion card that requires a free PCI-E slot on the motherboard for installation and use. Also determine if the slot is blocked by the graphics card. The PCI slot cannot be installed and used. Never install the expansion card in the PCI slot. Colour: Black Material: Plastic+Metal Package Contents: 2 x PCI Express Card 2 x Low Profile Bracket Only 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.