Updated Universal Serial Bus (USB) 2.0 driver support is available for Windows 2000. The updated USB 2.0 driver components are available in Windows 2000 Service Pack 4 (SP4). Windows 2000 SP4 includes fixes that correct the issues that are described in the following articles in the Microsoft Knowledge Base:

Consider the following issues that apply when you install Windows 2000 SP4:

•	If your Windows 2000 USB 2.0-capable computer is already configured for USB 2.0 support, the USB 2.0 drivers that are already installed on the computer are updated when you install Windows 2000 SP4.
•	If your Windows 2000 USB 2.0-capable computer is not yet configured for USB 2.0 support, you must manually install the USB 2.0 drivers after you install Windows 2000 SP4. To do so: 1. On the desktop, right-click My Computer, and then click Manage. 2. Double-click System Tools, and then double-click Device Manager. 3. On the View menu, click Devices by type (if it is not already selected). 4. In the right pane, right-click the USB 2.0 Enhanced Host Controller Interface (EHCI) Host controller, and then click Properties. The USB 2.0 EHCI Host controller entry is listed under either of the following device types in Device Manager: • Universal Serial Bus controllers • Other Devices, where it is displayed as Universal Serial Bus controller with a yellow exclamation mark (!) next to it. 5. Click the Driver tab, and then click Update Driver. 6. After the Upgrade Device Driver Wizard starts, click Next. 7. On the Install Hardware Device Drivers page, click Search for a suitable driver for my device (recommended), and then click Next. 8. On the Locate Driver Files page, under Optional search locations, click to clear the following check boxes (if they are selected), and then click Next: • Floppy disk drives • CD-ROM drives • Specify a location • Microsoft Windows update 9. Click Next to install the driver that is recommended by Windows. 10. Click Finish to complete updating your drivers for the USB 2.0 host controller.
•	When you add a USB 2.0 controller to a Windows 2000 SP4-based computer, the Add/Remove Hardware wizard is displayed and you are prompted to install the USB 2.0 controller. To do so, follow step 6 to 10 of the procedure that appears earlier in this section.
•	If you purchase the Windows 2000 SP4 integrated CD-ROM (where SP4 is already included with the Windows 2000 operating system) and you install Windows 2000 SP4 from the Windows 2000 SP4 integrated CD-ROM on a computer with a USB 2.0 controller, Windows 2000 Setup detects the USB 2.0 controller and installs it during Setup.

For additional information about how to obtain the latest Windows 2000 service pack, click the following article number to view the article in the Microsoft Knowledge Base: For more information about USB 2.0 and Windows, visit the following Microsoft Web site: