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If you have a properly enumerated Universal Serial Bus (USB) hub connected to your Windows 2000-based computer and you add five more hubs connected in a chain, the last hub may not work properly. Windows 2000 does not support USB hubs more than five deep.
Five hubs deep is the limitation in the USB specification. It is not a limitation in Windows 2000.
You can see the non-functional hub in Device Manager. Click Start, point to Settings, click Control Panel, double-click Add/Remove Hardware, click Next, click Add/Troubleshoot a device, and then click Next.
Right-click the hub with an exclamation point in a yellow circle. You may see either of the following statuses for the hub:
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