You may experience any of the following symptoms:
- Your Hi-Speed Universal Serial Bus (USB) 2.0 device does
not operate in Hi-Speed mode.
- An Enhanced Host Controller Interface-compliant
(EHCI-compliant) USB host controller appears in Device Manager with an
exclamation point in a yellow circle, or with status code 28.
This problem occurs because Windows 2000 does not include
support for EHCI host controllers.
To resolve this problem, obtain the latest
service pack for Microsoft Windows 2000. For additional information, click the
following article number to view the article in the Microsoft Knowledge Base:
How to obtain the latest Windows 2000 service pack
To install USB 2.0 support in Windows 2000, follow
- Visit the following Web site:
- Click Windows Update Catalog.
- Click Find driver updates for hardware
- Click Other hardware.
- In the Manufacturer name box, click
- In the Operating System box, click
Windows 2000 Professional RTM.
- Click Search.
- Download the driver that is named "NEC usb software update released on June 01 2001."
The size of the Windows 2000 version of this driver is 107 KB. The
Microsoft Windows XP version of this driver is 290 KB.
files in this update include:
Date Time Version Size File name
23-Apr-2002 22:46 5.0.2195.5652 135,920 Usbport.sys
18-Apr-2002 23:46 5.0.2195.5605 49,392 Usbhub20.sys
23-Apr-2002 22:46 5.0.2195.5652 19,216 Usbehci.sys
07-May-2002 16:52 7,159 Usb2.inf
09-May-2002 23:12 8,736 Usb2.cat
18-Apr-2002 23:46 5.0.2195.5605 6,416 Hccoin.dll
After you install this driver and restart your computer, the
USB 2.0 controller and device are listed correctly in Device Manager. If you do
not install this update, the USB 2.0 device is listed and functions, but the device does
not work at full USB 2.0 speed.
has released this update to provide additional functionality in Windows
Currently, only EHCI host controllers that have the following
hardware IDs are supported by this update:
- NEC (NEC PCI to USB Enhanced Host Controller B0, NEC PCI to
USB Enhanced Host Controller B1)
- Intel (Intel PCI to USB Enhanced Host
- VIA (VIA PCI to USB Enhanced Host Controller)
: The Microsoft USB 2.0 driver may not be listed as an available update if third-party USB 2.0 drivers are installed on your computer. You may have to remove the third-party USB 2.0 drivers, and then install the Microsoft USB 2.0 driver from the Windows Update Web site.
has confirmed that this is a problem in the Microsoft products that are listed
at the beginning of this article.
This problem was first corrected in Microsoft Windows
2000 Service Pack 4.