How are this system powered?
2036664
Powered, into the subwoofer. Cord may be a little short for some set-ups but works fine for me.
961448
No. It's powered by a small AC to DC adaptor. You do need to factor that into the installation.
1804351
It uses a power adapter. I'm not near the system, so I can't tell you what the voltage is right now.
1048263
It is powered, don't have to buy anything extra, everything u need is all included.
1366211
You plug it in. I works pretty well. It has better power than the battery operated kind.
1111716
It isn't powered. It's just the flat bottom piece, two vertical tubes, some carbon, and plastic heads for the tubes. You need a power head or some other air-blowing device to make it work.
2202223
It's bus powered, it draws all the power it needs from the usb port on your pc.
1399045
Completely powered via USB. Has a double USB cable to plug into two USB ports should your computer not supply enough power. Works like a champ.
1817195
It is powered via the USB connection from your computer(s). It has worked great for my husband and I sharing two printers between our two computers.
645313
no power draw that i'm aware of, the unit is activated when triggered by an outside source.
615365
They are powered they plug into 110V. Awsom sound for the size. I like them better than my other tv's 5.1 speakers.
2033696
The controller takes the power from the panels and manages both the battery charging and load output. I am not sure what you are asking.
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.
2009023
This device is USB powered. Hence, whenever your system powered on, device will start working.
135673
Its powered through the coaxial cable. It works immediately after you hook it up, not days later.
533765
It can be powered either way. A power adapter is included in the box as well.
197958
You just plug it into the computer via USB drive and set it up that way and you are ready to go. No other power source needed.