View bandwidth allocations for a USB host controller

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

To view bandwidth allocations for a USB host controller

Open Device Manager.
Double-click Universal serial bus controller.
Right-click a USB Universal Host Controller for your system, and then click Properties.
On the Advanced tab, in the Bandwidth-consuming devices list, view the bandwidth used by each device.

Notes

To open Device Manager, click Start, click Control Panel, double-click Administrative Tools, double-click Computer Management, and then click Device Manager.
You can view bandwidth only for a universal serial bus (USB) controller. Some USB devices (for example, modems) might not appear because they do not report bandwidth requirements to the operating system.
Each USB controller has a fixed amount of bandwidth that all attached devices must share. If you suspect a bandwidth shortage for a USB controller, you can confirm this by viewing the bandwidth allocations currently being used by each device.
Universal serial bus controller appears only if you have a USB port on your computer.

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