Fire alarm systems need to be inspected, tested and tagged annually. Testing must include all smoke detectors, manual pull devices, annunciators, visual indicators and strobes, control units, voice/alarm communications systems and any other devices that are a part of the fire alarm system.
it will need a port like this one to get more power from the usb since it only give 5.0 volts and this powered usb give up12 to 24 volts so you dont have that in a laptop and there is no way it could raise the power on the usb port in a laptop without damaging something .http://en.wikipedia.org/wiki/Powered_USB.
Connect the monitor cable to the input port on the rear of the monitor. If the port on the laptop does not match the one on the monitor, connect an adapter to the end of the cable that attaches to the laptop. You can purchase adapters that convert VGA to DVI, DVI to VGA, HDMI to DVI and DVI to HDMI.