Is it USB powered or does it use an AC adapter? (ie, do you need to plug it into the wall to use it?)
936152
It uses the AC adapter to plug into the wall for power. The USB is to connect to your PC to communicate with the scanner. Although this is a "wireless" scanner, I have a desktop computer that doesn't seem to allow the scanner to work without being connected via the USB. It is my understanding that a laptop is able to work better wireless, thus being able to place your scanner in another area of your work space and without connecting the USB plug into your laptop. You will still need to plug in the AC adapter for power. I will say that this scanner, using 300 X 300 dpi in the custom settings, scans VERY fast! It uses the AC adapter to plug into the wall for power. The USB is to connect to your PC to communicate with the scanner. Although this is a "wireless" scanner, I have a desktop computer that doesn't seem to allow the scanner to work without being connected via the USB. It is my understanding that a laptop is able to work better wireless, thus being able to place your scanner in another area of your work space and without connecting the USB plug into your laptop. You will still need to plug in the AC adapter for power. I will say that this scanner, using 300 X 300 dpi in the... » Read More It uses the AC adapter to plug into the wall for power. The USB is to connect to your PC to communicate with the scanner. Although this is a "wireless" scanner, I have a desktop computer that doesn't seem to allow the scanner to work without being connected via the USB. It is my understanding that a laptop is able to work better wireless, thus being able to place your scanner in another area of your work space and without connecting the USB plug into your laptop. You will still need to plug in the AC adapter for power. I will say that this scanner, using 300 X 300 dpi in the custom settings, scans VERY fast! « Show Less
1260490
It plugs into the wall. I leave mine plugged in all the time and use it at home.
1669532
To power it through the wall you have to buy the USB plug, that's how I power it, I haven't even hooked it up to my laptop yet.
1403031
It has a separate power supply, unfortunately it is not USB-powered.Hope this helps & enjoy.
942013
This unit is USB powered, does not need to be plugged to an electric outlet. The computer this device it connected to will power the unit using the USB cable.
1181463
AC adapter provided.. Otherwise, you can purchase an AC plug with USB ports.
627053
AC. you plug it in to the wall with the included adapter. It has a white 4-foot cord.
1252156
It is rechargeable via a USB cord that is included. I'm not sure if it's actual using AC if it's playing while plugged into a computer (or the wall, if you use an adaptor).
2042745
AC adapter is rated 100 - 240 volt AC in. You just need an adapter to plug it into your wall socket.
948435
No problem dude! Its powerd by the USB port! You dont have to plug it on the wall
2190061
It's battery powered so you have to buy batteries. I believe it can be powered with AC adapter but it doesn't come with it.
55471
It just plugs into the wall outlet. I hope that is helpful. Maybe I'm not understanding, let me know.
2131785
USB plugs into AC adapter which plugs into the wall. This device is awesome. I own two of them.
1694489
Yes, it plugs into a regular AC socket. The USB function is to charge or power a USB device.
1891395
The adapter I have is AC powered and not battery operated. I don't understand the question: "without AC adapter..." and "rather than battery operated." If it is not powered by AC or a battery, how is it supposed to be powered. This unit plugs into an earphone receptacle on the computer. These ports don't supply power like a USB port does. I don't think my answer helps much.
1374740
It needs a power outlet. I believe you can plug it into a usb outlet or it comes with a adapter to plug into the wall.Refer to the 4th picture, power is in the middle.
2030347
The USB is simply a power source. You will need an adapter to plug it into the wall. Must be low voltage bulbs. My wife does love not having to deal with batteries though.