*1 PCI 2.x & 3.x slots will max out at 2.133Gbps. To meet available maximum transfer speed, high quality USB 3.0 cables and devices are required *2 Supports both 32-bit & 64-bit OSes *3 Make sure the power is well connected, otherwise you will see a "Power Surge on Hub Port" message error and no 5V bus power in USB ports.
The Card provides over twice (200+%) the performance gain over on-board USB 2.0, and just comes in 30% slower than the maximum speed it can reach in PCI-Express slots