Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Is it usb charging?
Document: The charger takes up a lot of space (much thicker then the laptop), and seems unique so you can't use other chargers. I would prefer a USB charging interface.
This is based on pretty regular usage which consists of some YouTube video playing with sound, casual web browsing/email, and taking notes with Google Drive. When charging up from extremely low battery, it takes roughly 2 hours to get fully charged which I am happy with.
Also, it charges pretty quickly even when you're charging while watching video online.CONS: (Some of these will sound like nitpicking, I realize, but still...)- No backlit keys. Until you know the keyboard layout and have learned shortcut key combinations, having backlit keys would be a major plus.- Limited viewing angles.
Scrolling was smooth, and pages loaded faster.. Memory: I preferred the 4GB version but that has not been available from Acer or Amazon for a long time. So, settled with 2 GB. Not sure if that would be a constraint during the lifetime of this machine. But, so far, the machine is handling anything I throw at it.. Battery: We hate to keep the laptops for charging in the middle of the day.
The delay is pretty minimal when you are moving side to side for example. It keeps up pretty well and not that I video-chat a lot, but I am content/happy with this camera and I think it takes decent pictures for a low cost laptop.Charger:  The charging port is a very small hole on the left side of the device but the charger does have a small power brick with it like most laptops I have seen (but not all).
One such is battery life. It can go a LONG time without charging. It lives up to the long battery life it promises. All Chromebooks are easy to use but the start-up and shutdown time are also pretty phenomenal. Life is easier for users if you are familiar with Google Apps and have a Google account, although this certainly isn't required. It was nice to sign in and have everything--including my Drive (my leisurely writing example)--all available.
I'm not sure how many $199 Chromebooks will have Haswell (non-touch version).2. Battery life is very impressive, again for the price show me something else that does as well. This is a 40WHr battery! Most people don't think too much about the battery capacity of the computer they have, but a 40WHr battery is spendy include in a $260 system! Also power adapter is 65W!! That translates to VERY fast charging to full capacity.3.
Charging fully takes about 2 hours from the AC charger.The only single complaint I will make is the SD slot is not a FULL slot. The SD cards hang about half way out vs. full insertion on the 720C. Not a huge deal, but it makes portability a bit less.All the other ports work fine, I did not have any issues hooking up to the TV via HDMI or external hard drives by the USB 2/3 ports.Overall, I'm glad I purchased the 720P.
I bought this Chromebook because my Dell laptop died. I decided to use the HDMI port to plug it into my 36 inch Sony tv. It works great and drives the bigger picture perfectly. Once the tv is active, you can close the Chromebook and just use the tv and usb keyboard and mouse in docked mode. Essentially, there is only one software program and that is the Chrome browser. All the Apps from the app store run on that and there is no lengthy download or updating of them.
Bookmarks from my other Chrome browser went right to my Chromebook browser, which is great. I don't believe it will recognize a usb DVD drive, and I don't know if a portable hard drive will work either. But a USB Flash drive will work and I transferred a bunch of files from a SD card. WIFI always works well from my router. Haven't tried it outside my home.It takes a little getting used to after Windows or MAC computers,  But the best thing about it is the speed.
Answer: No, it uses a smaller, somewhat lighter and flatter than usual, 65W charging brick with a traditional round laptop plug. The brick input is 100 to 240V, 50 to 60 Hz, and 1.6 A, so it should work fine in most countries (the AC plug for the brick is the newer IBM PC style).  The output is 19V at 3.42A, center pin positive.