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.
Step 2. Connect the video cable to the video-in port on the TV or project. Connect an adapter to the cable if needed, and then connect it to the video-out port on the laptop. Note that most laptops have either a blue VGA video-out port or a white one for DVI cable connections.Step 3.tep 2. Connect the video cable to the video-in port on the TV or project. Connect an adapter to the cable if needed, and then connect it to the video-out port on the laptop. Note that most laptops have either a blue VGA video-out port or a white one for DVI cable connections.