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The iHome iBT39 is a bluetooth device and if your Laptop supports bluetooth (or you get a USB bluetooth dongle for it), you will be able to pair it to your laptop if your Operating system is modern enough - follow the "help" instructions on how to turn on bluetooth and pair a device.
It is an electrical-electronics device.
yes
Laptop and portable device cover
Usually--but there's one sure way to find out! Attempt to charge the device with the laptop off, and check the device's charge indicator.
on laptop pc which one of the four light indicate your atenna on
with windows update
It's used to navigate in the device you're using (e.g. a mobile phone, navigation system, iPod, laptop etc.)
Generator, or extended battery, or just a basic laptop battery....i have no idea what the previous guy who answered this was smoking.
CLICK ---->Start-->Programs-->Accessories--> System tools---> System information
the Power button
yes