How to find the WWN of a Fiber Card in Windows

Download the appropriate version of the fcinfo tool:

http://www.microsoft.com/en-us/download/details.aspx?id=17530

Install as administrator. It's very possible that you will get an error saying some part you are trying to install is older than what is already there. Or an error that you can only install as administrator.These only appear to be warnings, as the program seems to install just fine is spite of them.

Once complete, open a command prompt, and type:

fcinfo

The output generated will be the HBA's WWN.