Why won’t my USB device work in Windows 98 se?

Microsoft Knowledgebase Article ID number Q240075
USB Devices May Not Work in Windows 98 Second Edition

SYMPTOMS
Universal Serial Bus (USB) devices that are plugged in to a computer running Microsoft Windows 98 Second Edition may not work if the following hardware components are installed on the computer:

* An AMD processor (running at 350 MHz or faster)
* A VIA Technologies USB controller

CAUSE
This behavior occurs because there is a timing-specific problem in the Universal Host Controller driver (Uhcd.sys), which may prevent USB devices from enumerating under specific timing conditions.

RESOLUTION
To resolve this issue, download and run the appropriate file for your language version of Windows.

NOTE: This update only applies to Windows 98 Second Edition. For additional information about USB devices in Windows 98, click the article number below to view the article in the Microsoft Knowledge Base:

Q258773 How to Enable Universal Serial Bus (USB) Support

FOR MORE INFORMATION, REFER TO THE MICROSOFT ARTICLE:
http://support.microsoft.com/support/kb/articles/Q240/0/75.ASP?LN=EN-US&SD=gn&FR=0

STATUS
Microsoft has confirmed this to be a problem in Windows 98 Second Edition. This problem was corrected in Windows Millennium Edition.

Knowledge Base