Allows you to add 2 external USB 3.0 ports on the rear bracket and 4 ports on the front bay. Compatible with all versions of Windows (2000, XP, Vista, Seven, 8, 10, 11 .... IN 32 OR 64 bits). The kit consists of a USB3 PCIe card, a 3.5" format front panel, and the necessary accessories (drivers, hardware, cables). PCIE 2.0 1x type card (compatible with 1x, 2x, 4x, 8x, 16x) ports. 4 USB 3.0 5G ports, backward compatible with USB 2.0 and USB 1.0 (2 ports on rear bracket, 2 ports on internal 19-point USB3 connector). Reinforced capacitors that allow the card to be auto supplied by the PCIE port. USB 3.0 A to USB 3.0 19-point cable to connect the front panel to an internal 19-point socket. Sata 15 -point power supply (Cord adapter for Molex/ Sata supplied power supply) to connect to your main.