Do USB ports have a fixed ID?

[Jon D]

I would like some info on referring to USB ports. I have tried Google
with no joy.

I have four USB ports on the back of my PC.

Does each physical USB port have a fixed ID which I can always use to
refer to it (such as "USB port 0")?

Or alternatively, is the reference to a given physical port allocated
dynamically depending on what USB device and maybe what USB hub is
attached to it?

Thank you.
Jon


PS: Does a given *physical* USB port have the potential in everyday use
to support several *logical* USB ports?

 

[Franc Zabkar]

I would like some info on referring to USB ports. I have tried Google
with no joy.

I have four USB ports on the back of my PC.

Does each physical USB port have a fixed ID which I can always use to
refer to it (such as "USB port 0")?

Or alternatively, is the reference to a given physical port allocated
dynamically depending on what USB device and maybe what USB hub is
attached to it?

Thank you.
Jon


PS: Does a given *physical* USB port have the potential in everyday use
to support several *logical* USB ports?

I use Win98SE. It ships with a utility called usbview.exe. According
to usbview, the USB port numbers are fixed. I don't have a hub so I
can't tell you how usbview identifies devices attached in this way.

- Franc Zabkar

 

[Thomas Wendell]

Most likely PORT/LUN (Logical Unit Number)


--
Tumppi
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Most learned on these newsgroups
Helsinki, FINLAND
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