4 Port USB 3.0 PCIE PCI Express ControlCard Adapter+20pin to 2 port usb3.0 hub 3.5 Floppy bay Front Panel 

* Fully compliant with PCI Express Base Specification Revision 2.0

* Single-lane (x1) PCI Express throughput rates up to 5 Gbps

*Compliant with Universal Serial Bus 3.0 specification Revision 1.0

* Supports simultaneous operation of multiple USB 3.0, USB 2.0and USB 1.1 devices

* Supports the following speed data rates as follows: Low-speed (1.5Mbps) / Full-speed (12Mbps) / High-speed(480Mbps) / Super-speed (5Gbps)

* Supports 2 downstream ports for all speeds (internal 20pin header)

* Built-in 4-pin power connector for receiving extra power supply from system

* Hot-swapping feature allows you to connect/disconnect deviceswithout powering down the system

* Support Windows® XP/Vista/Windows 7

System Requirements:

* Windows® XP/Vista/7

* One available PCI Express slot (Recommend PCI Express 2.0)

Accessories:

1x PCI Express 2-Port USB3.0 Card

1x 20pin to 2 port usb3.0 hub 3.5 Floppy bay Front Panel