I have a P2 266 which runs either Win98SE or XP Pro. I rarely use Win98 now and it is my aim to eventually remove Win98. The machine has 2 USB ports.
I recently purchased a Mustek USB scanner as my first USB peripheral but having followed the instructions to allow XP to locate the scanner it failed to do so.
On advice, I went in to device manager and looked at the USB section and the folowing entry (the only one under USB) had tha classic exclamation mark in the yellow circle.
Intel 82371AB/EB PCI to USB etc
Further examination of the properties of the Intel entry revealed a code 10.
I then went into W98 and installed the scanner iaw the instructions and everything was fine. The scanner used 470 of the 500 ma available on the port and worked perfectly.
Inspection of the device manager in Win98 showed an additional entry of "USB Root Hub", there were no exclamation marks on any of the entries.
I have searched this forum, Intel & Microsoft and have not yet found an answer. I reinstalled XP and the only incompatability shown was the WinFax Pro 10, but that is another question.
I found a couple of entries from Flecc about O and U type of port, which might be relevant but why should a USB port work in Win98 and not in XP?