User buttons Connector

Hello,

I want to communicate with external world with a wired interuptor.
I find the user button connector in documentation (CON12, behind USB Host
connector). I want to known the connector type I found MOLEX - 53398-0871 -
CONNECTEUR 1.25MM CMS 8P
[http://fr.farnell.com/molex/53398-0871/connecteur-1-25mm-cms-8p/dp/1125371]
It's ok ?
In documentation It writted "The signal is low if a button is pressed.", so
how I can plug my own interruptor?, sorry I'm not a start in electronic...

Thank for help

Dear

Were you able to confirm the type of connector?
I need to buy too.

Carlos Pinto Jr.