New Power Mac won't start up
My husband bought a new Power Mac and he unfortunately passed away without telling me anything about it. I want to contact Apple Support but in order to do so I need the serial number of the machine. I don't know where to find it and according to the info on Apple's website, it should be on the underside of the machine but I don't see any number there. Can anyone who has a new Power Mac tell me where to find the serial number...and/or tell me why it won't start up.
Mac Pro, OS X 10.11