USB 2.0

They are ALL usb 2.0..

Dimension 4550 Series,Intel Pentium 4 Processor at 2.0GHz
256MB DDR SDRAM at 266MHz
64MB GeForce4 MX Graphics Card with TV-Out
40GB ATA-100 7200 RPM
Microsoft Windows XP Professional,Service Pack 1
Intel Pro 100M Integrated PCI NIC Card
40X/10X/40X CD-RW Drive
SoundBlaster Live! with 5.1 Support

Purchased it in Feburary of 2003

I have just discovered that my usb 2.0 ports are not fully usb 1.1 compatable. My new Thrustmaster firestorm dual power 3 controller would not be detected on any of my ports. When I installed a old pci-usb 1.1 card it detected the controller right away. I wonder if Dell has a driver fix for this?

Joey

I am not very technical...

Had problems with Dimension 8250 to a Nikon digital cmaera USB connection. Having tried various options finally managed to get it working by installing http://support.microsoft.com/default.aspx?scid=kb;en-us;822603 via Windows Update as a recommended update.

Prior to that I had installed http://support.dell.com/us/en/kb/document.asp?DN=1072515 as my machine has VIA chipset but it did not help. Does your machine has a USB VIA controller?

I am not sure the problem was fixed by Microsoft update alone or combination of both Dell/VIA and MS.

Hope this helps!