Google has some good pictures: http://www.google.com/images?q=HP%20MSA%203000
HP's high-end 'ProLiant' kit have "Integrated Lights-out" that will allow you to do things like power cycle the device, drop on to the serial console, etc. All over a user friendly web interface.
I'm assuming this 'admin backdoor' it is for that.
Google has some good pictures: http://www.google.com/images?q=HP%20MSA%203000
HP's high-end 'ProLiant' kit have "Integrated Lights-out" that will allow you to do things like power cycle the device, drop on to the serial console, etc. All over a user friendly web interface.
I'm assuming this 'admin backdoor' it is for that.