Only 2 of the 3 USB ports are listed

Hewlett-packard Hp pavilion dv7-3165dx 1...
July 11, 2011 at 10:17:16
Specs: Windows Vista Home Premium, 4.00 GB
In "Device Manager," only 2 of the 3 USB devices are listed. I'm computer please...
I have an HP Pavilion dv7 Notebook PC

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July 12, 2011 at 03:46:21
It depends what type of devices they are.
Different types of USB devices are listed under different categories in Device Manager- they aren't all "lumped together" under the same one.

For example, a USB mouse will be listed under "Mice & Pointing Devices", but a USB external drive will be listed under "Disk drives".

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