Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: It says "wireless", what is the wire showing in the picture used for, power only?
Document: For years we have used Wi-Life cameras for home security monitoring. Not a bad set-up but high maintenance and the picture was grainy, to upgrade would cost more money. We decided to try this Drop Cam Pro Wi-Fi Wireless Video Monitoring Camera and after little over a  month we are impressed by the price, picture quality, easy set-up and maintenance, great customer service personnel, (helped with questions) and the ease of remote monitoring.
I was a little skeptical of this at first just because of how simple it was. Too much very relieved surprise, this product went above and beyond. For anyone that says the video quality is just &#34;ok&#34;, must have too many 3D TVs in their house because the quality is astounding. There is a slight curve to the image but nothing at all that is so noticeable that you won't get used to it. Night vision is excellent.
Updated- downgraded from 2 stars to oneit drops wireless 45 mins out of every hour, Dropcam says it is because I am using HD. And it does a horrible job of marking any activity in the recorded history. And they have the nerve to charge $10 a month for something that does not even work right.This is a product I wanted to like.
Also, the video in the web player tends to get quite a bit of a delay after a while of viewing, up to a minute behind even though it still says &#34;Live&#34;.The camera is somewhat sensitive to wireless interference and distance from the router. If you have trouble you may have to invest in a powerline-networking or other option to put an extension closer to the camera.There are also some limitations to the camera that are worth nothing.
Intermittent power on issue that made camera inoperative after a week.Camera was replaced easily via Amazon.I like the video quality (colors and sharpness), night visions  and ability to zoom to specific part of image. I have not used 2 way audio with night vision, so can't comment on that reported issue. On my 4 Mbps upload cable internet I do not experience lag or stuttering.
The Drop Cam is great. It was up and running in minutes. It's really versatile and can be used anywhere your wifi signal will reach and it is in range of plugging in with a USB/ power connector. The product design is beautiful. The subscription service is necessary for most people I would imagine. The app and website UI's work well. One complaint I have is the location services work by triangulating your location (your phone's location) with the use of cell phone towers.
Note. the buffering wheel in the Pro shot which is far too common. My Apple Airport Router is less than 20 feet away (I could hard-wire this as I've done with my other cameras, but there's no option to do so). The HD never (and still doesn't) have this issue -- we've moved it into the nursery to serve as a baby monitor. Also, note in the picture the color is far less accurate than the HD with no improvement on resolution.
It didn't see our SSID, and didn't see any of the dozens of SSIDs broadcasted throughout our building. After some tinkering, I was able to get it on our network, but I'm not confident that the camera will reconnect by itself. For a "wireless" camera, it sure has a fat ugly USB cable that only serves to setup and supply power. And It would have been nice if they supplied some way of sticking the cable to the wall or ceiling.
I have owned the Dropcam Pro for just 4 months now...I have absolutely nothing negative to say about this product, In the 4 months I have owned this, it has worked flawlessly. The only time it has ever went offline is when my power went out in my home, cutting of my wireless router. And I received a immediate email telling me my camera was offline...Alerts are spot on.
First, the good news.This is a webcam that is STUPID-simple to set up. You plug it via USB into your Mac or PC and the camera contains the proper setup programs for each of those platforms. Once it's set up -- choose a wireless network, create an account with Dropcam -- yup, you MUST do that, read on -- then you're ready to go. The camera's wireless network-wise, but it needs power and that comes from a conveniently-lengthy power cable.
Answer: Yes, you use the USB cable for setup on your computer, after that it's just used for power