Instruction: Answer the given question using the supporting document.

Input:
Question: it it gigabit router 80211ac 1200
Document: I am fortunate to live in Gigabit City. A direct connection from my computer to the incoming Ethernet cable is 1,110 Mb/s. Honestly. I tried many AC 1200 routers. Wireless connectivity topped 300 Mb/s with my laptops. Unfortunately, the top WIRED speed to my computers was in the 700-800 Mb/s range. The RT-AC56U has wireless connections of over 200 Mb/s to my laptops, but what really shined was the WIRED throughput, between 937 and 990 Mb/s, barely below a direct connection.
If you need a router primarily for wired desktops then I have nothing bad to say about the RT-AC56U either; it could be a good investment if you were to upgrade to a even faster (say Gigabit?) internet connection later. But if you mainly use 2.4GHz wireless, then prepare to live with degraded performance until you have upgraded your wireless devices. [Added] For your reference, I am including the 2.4GHz settings that I found to be the most stable and work for all my wireless devices.
This was an upgrade to my Asus RT-N56U. The 56U was running the custom Padavan Firmware...which rocked, much better performance with that firmware than stock.. That router was super fast both wifi and wired speed. Though, I do believe the 56U to be more consistent with its transfer speeds. I got a steady 20-24MB's file transfer speed in Win 8 from my file server over the 5ghz wifi(intel Advanced N 6235) and 100-113MB's over gigabit wire. File transfers always stared at full speed and rarely fluctuated.
I don't do much serious work on the laptops, so the 'slower' 200 Mb/s speeds are not a problem. I am able to Watch Netflix on 3 devices while my son is on the X-box, and move 4.7 gig files from two servers to two computers all at one time with NO buffering or lag. Add in the price savings of over $100 over an AC 1200 router and I am SOLD. My RT-AC56U has been in service for just under a month, with ZERO issues.
I live in an apartment so I saw no need to spring for the longer-range 66U and the 56U doesn't fail to impress. It works great and I have awesome signal and speed everywhere, it even keeps up with my gigabit internet.
The other positive reviews you will find here are accurate. This device has plenty of muscle. You're getting a beefy Broadcom BCM4708A0 chip running at 800MHz, 256 Memory and 128 Flash memory, the WIFI chipset is a Broadcom BCM4352 for a/c @ 900 and a Broadcom BCM43217 for b/g/n @ 300 transfer rate.There was a huge issue with 2.4GHz WIFI slowing to a crawl and dropping packets that required you to reboot this router every other day. The latest firmware supposedly resolves this but I still here complaints that it has not resolved for some.At this time I highly recommend the Netgear Smart WiFi Router AC1750 Dual Band Gigabit (R6300v2) instead of this ASUS router.Here are the 3 major problems in my opinion that you should be aware of  -#1 - The latest ASUS routers have troubles with many Android devices and 5GHz WIFI!
Wired transfer speed is from 90MB-110MB's, a tad slower than the N56U, which is weird because the AC56U has a better cpu(dual core 800mhz). May be Asus bloated firmware compared to the optimized Padavan firmware on the N56u. Wifi is still along way away from reaching gigabit wire speeds though.I did try Merlin Wrt, which added a nice status page and other features, but I had to switch back to stock firmware. There were too many issues and performance was definitely better with stock. (Why ASUS doesn't include the  detailed Status page by default is beyond me)The AiCould (Cloud Disk)feature needs support for user accounts.
This is a strong buy recommendation  if your thinking of a new router.
My older Belkin router works MUCH better.
Router arrived on time and works perfectly! I have no trouble so far with it!
Answer: Yes.  It is a gigabit router (hard wired ports).  Please see this link for the full specs from the manufacutrer.  http://www.asus.com/Networking/RTAC56U/#specifications