probably a silly question, but does it get power from the USB port or does it need to be plugged to an electric socket? thanks
317478
This unit runs on USB power. There is no need to plug this into an electric socket.
1403023
The device has its own power cord. I do not think it is designed to draw power from USB but only to power the USBs in the device itself. Thus the power cord.
1870891
It needs to be plugged into a usb port using the cable provided. The power button is located next to the usb ports.
1157133
It does include a USB cord, so if you have an adaptor for USB to an outlet (like lots of cell phones use) you can plug it in. Or, you can power it from USB on a computer.
1416837
Although the user manual does not say that it needs a power source, it came with a USB cable. I was not sure why, later I noticed that the device has a mini USB port on the side. I had it connect to my Cable box that has a USB port. The device did not work properly (it kept flickering) without using USB cable. It works perfectly now.
120254
No.....it plugs into an electric socket. Works real well, overall.....although one spotlight went out, right away. I haven't really needed that spotlight, however, so have not gotten it checked out yet....
1819489
No, it plugs in. When I first saw it, I assumed it was battery-powered (and weak), or even manual. But it plugs into a standard outlet, and is plenty powerful.
55471
It just plugs into the wall outlet. I hope that is helpful. Maybe I'm not understanding, let me know.
498032
Hi, Thank you for your question. It uses 110V AC power. It is not USB powered. Thank you.
2092680
No it has to be plugged into a socket. It does come with an AC power cord. It's a bit on the short side, you may need to use a light weight extension cord to help reach the socket.
1323540
Steven it is USB powered but comes with a second USB cable to provide extra power if required. In my experience it seems to be needed. Regards John Docherty.
1135004
It runs and charges off of usb power. You can use a usb ac adaptor and leave it on, but at some point the battery may get damaged always being plugged in.
100396
No batteries are needed. It gets what little power it needs from the USB port
1552695
It is powered by the USB connection and doesn't require an additional power supply. It is not wireless and must be connected with the USB cable.
1272887
No, it will need to get power from USB cable. Meanwhile, it will also need to get signal and drawing through computer's support.
2055089
Comes w/a split cable -- 1 end goes into a USB port, the other end has a plug w/a green end which goes into a green hole in the back of your computer. I think it gets the power from the USB port, but I'm not sure. It's not battery-operated.
1727979
It's supposed to need two USB ports to power it.source: http://reviewstash.com/viewtopic.php?id=1046