ASUS RT-AC66U 802.11ac 1.75Gbps Wireless Router

If you cannot differentiate the RT-N66U from the RT-AC66U. This should help you

Guess what I got? Yes, it is the ASUS RT-AC66U! To those who know me, this is nothing special to them as I am commonly known as the “router guy” or “NAS guy” to them.

This RT-AC66U is the latest offering from ASUS featuring the 802.11ac wireless standard. The 5th generation 802.11ac chipset delivers concurrent dual-band 2.4GHz/5GHz for up to a blazing fast speed of 1.75Gbps (450Mbps on the 2.4GHz and 1300Mbps on the 5GHz). The speed on the 5GHz channel is almost 3 times faster than 802.11n (up to 450Mbps)!


Technical Specifications

CPU Broadcom BCM4706
Ethernet Broadcom BCM4706
Switch Broadcom BCM53125
Wireless Broadcom BCM4360 and BCM4331
CPU Frequency 600MHz
NVRAM Size 64 kb
Flash Size 128MB
Wireless Standards a/b/g/n/ac; Support dual-band 2.4GHz and 5GHz with speed up to 450Mbps and 1300Mbps respectively
Ports 4 x Gigabit LAN (with MDI-X); 1 x Gigabit WAN (with MDI-X)
Power adaptor 19V with max 1.58A
3rd Party Firmware support Yes; Asuswrt-Merlin
Retail price SG$329 (as of posting)
FCC Test report MSQ-RTAC66U


Package Contents

Nice cool looking black box for the ASUS RT-AC66U. It kind of give off the “Black Label” type of feel

The ASUS RT-AC66U packaging looks quite nice with its dark theme, giving it a “black label” type of feel. With its price at SG$329, it is certainly considered a premium router to own. With the good past track records (from RT-N56U and RT-N66U), this should be a good router to go for.

RT-AC66U 802.1AC Gigabit Router, RJ-45 cable, Support CD, Power adapter, Warranty card and Quick start guide

The package comes with:

  • RT-AC66U Dual Band 3×3 802.11AC Gigabit Router
  • RJ-45 cable
  • Support CD (user manual and utility software)
  • Kaspersky CD (with 1 year license for 1 PC)
  • Power adapter
  • Warranty card
  • Quick start guide



Beneath these icons are blue leds

Like the ASUS RT-N66U, you will find the router status indicators at the front of the router. These tiny icons (with blue backlit LED) keeps you updated with the status of the router (left to right):

  • Power
  • LAN 4
  • LAN 3
  • LAN 2
  • LAN 1
  • WAN
  • 2.4GHz
  • 5GHz
  • USB
The ports at the back (left to right) – power, power button, 2 x USB, reset, Gigabit WAN, 4 x Gigabit LAN, WPS

The connectors at the back are:

  • 3 x RP-SMA connector for the antennas
  • Power connector
  • Power button
  • 2 x USB 2.0 ports
  • Reset button
  • 1 x Gigabit WAN port
  • 4 x Gigabit LAN port
  • WPS button


The RT-AC66U with the stand attached at the back
The stand snaps on to the mounting holes at the back of the RT-AC66U

With the supplied stand attached, you can place the ASUS RT-AC66U in a standing position, further reducing the real estate. Who says all routers need to lay flat on the furnitures?

Well, performance testing is next! Keep your eyes peeled for the next posting!


Picture Gallery


The different parts of this review series:

5 thoughts on “ASUS RT-AC66U 802.11ac 1.75Gbps Wireless Router

  • August 24, 2012 at 10:36 am

    That is one SWEET Asus!

    I have a bigger question though, several others have also released 802.11ac routers, but I recently read that the WiFi Certified won’t start until the beginning of next year.

    I think that means that this router is not yet WiFi Certified, and I read that this could cause problems with devices that are released after the 11ac certification, so I am thinking of waiting, or getting a 11n router.

    Can anyone tell more about this issue?

    Should I only buy a 802.11ac router that has WiFi Certification?

  • August 24, 2012 at 10:40 am

    OMG I want that ASUS!!! I am thinking of putting Wifi in our house, and I figure if I am going to do that then I should set it up the fastest I could get it.

    Lots of wireless routers out there, so I started doing some research and found that 802.11n is currently the latest, but 802.11ac will be much faster.

    Here is where I am confused, the 802.11ac certification won’t be issued till early 2013, yet I am seeing 802.11ac on the market claiming they are 802.11ac – even though they can’t be ‘Wi-Fi CERTIFIED’ since the 11ac certification isn’t finalized yet.

    Some of the reviews of these first 802.11ac product mention that they are based on a first draft of the 802.11ac spec, and might have some performance issues with products that are based on the final 802.11ac spec

    From what I read, the ‘Wi-Fi CERTIFIED’ certification makes sure that the devices will be fully compatible and function correctly with other 11ac products. The just released 802.11ac routers from several manufactures don’t have the Wi-Fi Certification.

    I feel it is best to wait on 802.11ac, since I have waited this long, another 6 month shouldn’t kill me.

    Am I crazy for wanting to wait till early next year to buy an 802.11ac router?

  • August 26, 2012 at 9:44 pm


    As you have mentioned yourself, it is better to wait for 802.11ac to be finalised before hopping on any of the draft currently.

    However, if you are just using it to create a media bridge for your media players, then probably you can get this as the rest of your device can still enjoy the 802.11n speed delivered by this little monster.

Comments are closed.