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.
But sometimes you can tell just by looking at the USB ports along the edge of the laptop. Compared with ordinary older UBS ports, USB 3.0 ports usually have a bit of blue around or within the jack itself. Some laptop makers will also label the faster port with a â3.0â or sometimes âSS,â which stands for SuperSpeed USB.