Many devices are going USB. Not only computer peripherals but also some other devices are making use of the 5V of current that can be drawn from the USM port of your computer. Check this one out. This $7.95 LED lamp is powered by the USB port of a computer and has a flexible neck, four LED bulbs and an on/off switch so that you don’t need to unplug the device from the USB every time you need darkness. The light will not illuminate the whole room but can easily make up for a late night chat session Jasica’s Blog.