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.
The computer is the correct model and it fits the description except for the USB ports. But when I looked at the manual, it pointed to 2 of the ports and labeled them USB... show more I recently purchased a laptop that was supposed to have 2 USB 2.0 ports and 2 USB 3.0 ports, but when I look at them, they're all gray. The computer is the correct model and it fits the description except for the USB ports. But when I looked at the manual, it pointed to 2 of the ports and labeled them USB...