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.
Now with that said, POWER! Each device you connect to the computer has a power requirement even if it has its own power supply. For my RT, I bought a 4-port USB hub designed for a laptop and it works great and is probably the most you will need.Depending on what you plan on hooking up to the ports, make sure that the tablet is on A/C power.ow with that said, POWER! Each device you connect to the computer has a power requirement even if it has its own power supply. For my RT, I bought a 4-port USB hub designed for a laptop and it works great and is probably the most you will need.