XP only included support for USB 1.x and the d610 I see has USB 2.0 ports. You claim you installed drivers but "XP" the original would fail for the USB 1.x issue along with folk missing the chipset drivers.
Sorry but given only the details in your post I don't think they should work at all.
Can anyone help with this mystery? I have an Dell Latitude d610 running WIndows XP with all USB ports not working. I have tried uninstalling the drivers and rebooting so that the correct drivers are reinstalled but the problem persists. All driver updates show that the drivers installed are up to date. In the Device manager an exclamation point is shown beside all USB ports. The computer ports all seem to be in good repair physically. (There are 4 USB ports and I previously wasn't even using some of them.)