Will a 9 volt 1 amp 17 watt power supply work with NetGear MR814 router?

If not, does anyone know where I can find a cheap power supply in eBay that will work?
Update: I did a test on it and it actually outputs around 11.7 volts. And actually i didn't mean to put in 17 watt, since that was in input, not output.
Update 2: Also, I heard something about the plug needing to match up with the router positive or negative. Does anyone know anything about that?
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