Re: Identify attached devices to an usb hub

Mario.Becker@xxxxxxx wrote: 
Hi freaks,

I'm looking for a way to solve the following problem:

I've a pc with several usb hubs attached to. To these hubs there are
usb devices attached in turn (typical 4 usb-serial converter and a
memery stick). Due to the undefined connection sequence I'm not able to
predict which COM port is located to which usb hub - but my software
have to know it for sure.

I've been able to find a way to identify all to the system attached usb
devices (.NET framework: System.Management.PropertyDataCollection). But
further more I have to know, which usb device is attached to which usb
hub. Is there something like a path which shows me the actual physical
tree structure of hubs and devices and their assigned com ports? (I
know: It is a bus system ;-) )

\\pc\usb_01\hub_02\device_01->(ComPort 05)
                  \device_02->(ComPort 02)
                  \device_03->(ComPort 03)
                  \device_04->(ComPort 04)
\\pc\usb_03\hub_01\device_01->(ComPort 01)
                               ...

Where can I get these information (registry) an how can I obtain this
information by software (e.g. C#)

Thanks in advance!
Mario

Look at the usbview sample in the ddk.

--

=====================
Mark Roddy DDK MVP
Windows 2003/XP/2000 Consulting
Hollis Technology Solutions 603-321-1032
www.hollistech.com
.

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