• Upgrades desktop computers to the new USB 2.0 standard
• Designed to work with mice, keyboards, CD-R/RW's, hard drives, webcams, flash card readers and other USB enabled devices
• Four external and one internal port,
• Includes drivers for Microsoft Windows XP, 2000, Me, 98SE, 98 and Macintosh OS X
• Backwards compatible with USB 1.0 and 1.1 devices

The Port Authority Hi-Speed USB 2.0 Card from Cables To Go is your link to the highest USB speeds available. The 5-port card upgrades desktop computers to the new USB 2.0 standard. With its four external and one internal port, it is designed to work with mice, keyboards, CD-R/RWs, hard drives, webcams, flash card readers and other USB enabled devices. The Port Authority Hi-Speed USB 2.0 Card can transfer data at 480 Megabits per second, making it 40 times faster than previous USB adapters and 20% faster than FireWire. The USB card is USB-IF certified and is backwards compatible with USB 1.0 and 1.1 devices. The Port Authority Hi-Speed USB 2.0 Card includes drivers for Microsoft Windows XP, 2000, Me, 98SE, 98 and Macintosh OS X. The plug and play design makes for easy, trouble-free installation of the card and your USB devices.

This usb/pci card was easy to istall and does just what it is supposed to do..

The product worked as expected. Upgraded an old MAC G4 system to now have USB 2.0 Best price I could find.

Works perfectly on my Mac quicksilver 933. I had a problem though when I installed it on my computer while OS 10.4.10 was still on this computer. OS 10.4 didn't see it as a USB 2.0 device until I installed OS 10.5. Now, it works as designed, and either way I was happy, because it did work, as a 1.1 device.
So if you using a Mac with 10.5 this will serve you well. Not sure about windows. But then again, who is?

The card appears to work upon initial installation.
However, after hot restart, any device attached via the usb port(s) is dropped and usb port is disabled. A cold restart (without any device attached) is required to restore normal operation. Devices can be addad back (to usb ports) after a cold restart.
Also, large file transfers (over 600K) to/from a usb attached drive appears to "hang" without possibility of clean recovery. A hard power down shutdown is only way out, but that leaves both drives in problem state (clusters involved in interrupted file transfer are left in limbo). Disk recovery utility (e.g.,Norton) is required to restore each drive back to normal.

Works exactly as advertised...didn't want to buy a new system until Windows Vista gets sorted out, so this minor upgrade to usb 2.0 can buy me another year or so...