My old 256 meg thumb drive works in the USB port on my keyboard, but this Memorex TravelDrive has too high a power requirement and won't work on my iMac keyboard USB port. So the only way I can use it is to unplug stuff from the back of the computer or a powered USB port. There is no excuse for making a thumb drive that sucks that much power. I don't know if it is the fault of the LED light, but whatever the cause for it being a power hog, it severely limits the usefulness of this product. I recommend you pass on this one and shop for a thumb drive that will let you connect it to any USB connector. I'm back to using my old one. Really poor engineering decisions on this one.