Motherboard Power Switch Connector help

Hi there just bought a new computer case, it was a Cooler Master Elite 350. Now upon looking at the power switch connector there seems to be a slight difference between my HP computer's power switch connectors and the cooler master's power switch connector. On the HP case it uses all 9 of the lead on the board for the power switch connector but on the cooler master it has only 8. Will this setup still work or do I need to return my case to get another one. Please let me know if pictures are needed.
The link here shows the layout of my motherboard:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02...

I would really like to recieve assistance, my first time I am changing cases. My brother took a look at it and told me it was not going to work but I feel like its still possible in getting it to work.