Does a powered usb hub work when not powered?

Answer Most powered USB hubs will work somewhat when not plugged into a power source, but not for devices that require power. So a powered hub not plugged in will work with devices such as keyboards or pr... Read More »

Top Q&A For: Does a powered usb hub work when not powered

Does a powered usb hub work when unplugged?

No. A USB port can transfer approximately 5 volts of energy; however, once the source is disconnected, the hub device will no longer function. While the hub acts a portal, the energy is dispersed t... Read More »

Would you prefer a solar powered watch over a battery powered?

Battery powered because I don't want to stay out in the sun. I'd like my apt. to be solar powered though.

Can I convert my traditional-powered light to solar-powered?

Any light that can run on traditional electricity can be powered by solar energy. Energy produced by solar panels is converted into the same voltage used by electric utility companies before being ... Read More »

How does the bart train work what is it powered by?

It's electric! The train moves because there are huge electric motors driving it. They're mounted in between the wheels. Here's a picture from an older car but it's exactly the same idea. http://... Read More »