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Item#: 9SIA0AJ3N90298

ASUS RT-N66U Dual-Band Wireless-N900 Gigabit Router, DD-WRT Open Source support, IEEE 802.11a/b/g/n, IEEE 802.3/3u/3ab manufactured recertified

  • IEEE 802.11a/b/g/n, IEEE 802.3/3u/3ab
  • Up to 900Mbps Wireless Data Rates

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews
  • newegg Designed for Class-Leading Speed and Range Designed with the latest in networking technology, the RT-N66U delivers exceptionally fast wired and wireless connectivity. What's more, it comes with a powerful detachable Wi-Fi antenna to further extend wireless range.
  • newegg Dual-Band Connectivity for Lag-Free Entertainment Delivering both 2.4 GHz and 5 GHz concurrent bands up to 450Mbps and 450Mbps respectively, the RT-N66U has a total speed of up to 900Mbps connectivity to provide speed with stability. Perform basic internet tasks like Web browsing and file downloading under the 2.4 GHz band, while also simultaneously streaming HD content and other demanding applications smoothly on the 5 GHz band.
  • newegg Optimized and Reliable Wireless Coverage via Ai Radar ASUS Ai Radar intelligently strengthens connections to wireless devices. With high-powered amplification and beam forming, it provides optimized signals in any direction with better coverage to improve data throughput.
  • newegg Easy Setup Through Your Tablet, Smartphone, or PC With the RT-N66U, setup is simple. Simply power and connect the router and then open a browser on a Wi-Fi-enabled device like a laptop or tablet. You will be taken to a setup page with a prompt to enter the ID/password listed in your manual and that's it! Now, setting up your network is easier than ever.
  • newegg Powerful functions, easiest management With the ASUSWRT Dashboard UI, setup, monitor, and control network applications all in one intuitive area. The whole new dashboard interface let's you manage all clients and settings on a single graphical interface and provides 1-click updates.
  • newegg Optimize Your Network for You Do you game a lot or spend most of your time streaming videos? Whatever your planned use is, the RT-N66U has a Quality of Service (QoS) that let's you select how much bandwidth is prioritized for virtually any task. Plus, the traffic monitor allows you to check your Web usage in a clear and graphical interface.

Learn more about the ASUS RT-N66U

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 90 days
  • Limited Warranty period (labor): 90 days
  • Read full details

Customer Reviews of the ASUS RT-N66U

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  • Matthew B.
  • 3/11/2016 7:05:55 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat Router

Pros: Fast arrival and Easy set up. I've had it up and running on multiple Wi-Fi devices, multiple laptops and cell phones as well as Xbox and have had 2 Roku streaming at the same time no issues. Even get full signal in the basement of multi-level home.

Cons: There's really nothing I don't like about the router. Great price on a re-furbished model. High speed and high quality powerful router

Other Thoughts: I would recommend this unit for anyone using a gaming system or using streaming devices.

Did you find this review helpful? Yes No

  • Michael B.
  • 12/18/2015 4:05:57 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsGigabit ports not functioning

Pros: Easily setup have a RT-N56 that works well thought I would get a RT-N66 also.

Got a replacement for the 1st one in a timely fashion. The second one is working extremely well very pleased with the performance. The wireless reaches well throughout our 4 level backsplit home.

Have now installed Merlin's firmware for some added tweaks on it, so far so good.

Cons: Two gigabit ports not working out of the box.

No cons for the second router I have received.

Other Thoughts: Like the product will just try another one.

1 out of 1 people found this review helpful. Did you? Yes No

  • Louis D.
  • 11/21/2015 8:09:07 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsFair router

Pros: Easy set-up. Great bandwidth from the ethernet port but....

Cons: Poor transmit range. Very limited range.

Other Thoughts: Needs more umph!

Did you find this review helpful? Yes No

  • Jason F.
  • 10/29/2015 9:48:55 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsUpgrading my previous review from 7/10/2014

Pros: I have since ordered 4 total refurb units. The first batch had missing materials, cables, or a broken power adapters, but the second batch was perfect manf refurb!

i have found that each time you buy one of these units, and each time you upgrade the ASUS firmware, you must go into the web gui and do a factory reset, and re-enter everything manually... especially if you are having issues. If you do this, they work without a hitch, and no more flaky days!

Of course, some people will complain about wifi dropouts, if so, download wifi analyzer app from android, or some other wifi detector app. Then pick a channel that isn't being used in your neighborhood/facility! Stop using channel 6 in auto mode and you should be fine. I can cover my whole block on an unused channel with a beautiful signal, but i can barely leave my house on channel 6, since everyone in the neighborhood uses it!

I have also converted a couple units to Tomato - Shibby firmware, and they run beautifully! HIGHLY RECOMMEND ASUS!

Cons: Cons have been upgraded from one semi-faulty unit to all 4 units working 100%, due to regular software factory resets.

1 out of 1 people found this review helpful. Did you? Yes No

  • Ron S.
  • 6/19/2015 2:14:26 PM
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsPoor Quality Control

Pros: The packaging seemed nice.

Cons: Router was DOA and would not boot.

Other Thoughts: It's obvious that there is no quality control for this product. It took less than 30 seconds to plug the unit in and observe random LEDs flashing while the router refused to boot. This is a test I would expect any recertified product to go through but apparently this test was not performed and now I'm paying the penalty.

Manufacturer Response:

Dear Ron,

Thank your for your time in posting a review about our products. On behalf of ASUS, we would like to apologize for any inconvenience this has caused you. All ASUS products undergo intensive quality control testings and final inspections for both hardware and software before sending it out to the stores worldwide. ASUS provides warranty for the router in order to fix or repair any isolated factory escape defect. For further assistance, please email me at and place the case #N150650797
in the subject line for a reference.
Thank you for choosing ASUS!

Best regards,
Jerry A
ASUS Customer Loyalty

Did you find this review helpful? Yes No

  • Jerry J.
  • 2/16/2015 9:22:32 AM
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsOnly as good as it's weakest link

Pros: Great coverage. Dual band. Fairly intuitive web interface. Outstanding performance.

Cons: Bought this router in March 2013. Yesterday, with no one even near the router it just shut off. After inspecting the cause, the spring loaded power button no longer stays in the ON position. If it is held down, the unit will power on, but shuts off as soon as I let go of the button. Very disappointing for an expensive higher end router to be crippled by the use of a cheap switch.

Other Thoughts: Doing a quick search on the internet, I found lots of others have experienced the same failure in this and other ASUS model routers. I have temporarily used a push pin to wedge and hold the button in the on position. And will begin exploring what new router I should purchase. Unfortunately it will probably not be an ASUS router.

Manufacturer Response:

Dear Corgi1,

First I want to apologize for the inconvenience this issue may have caused you. I understand that you have problem with router's power button it wont stay on. If you want I can create an RMA for your unit so you can send us the unit for repair instead of buying a new router. If you want to continue discussing this issue with me please don't hesitate to email me at and put case # N150261948 for your reference.

ASUS Customer Loyalty are dedicated in providing a good customer experience.

Thank you for choosing ASUS.

ASUS Customer Loyalty

2 out of 2 people found this review helpful. Did you? Yes No

  • David I.
  • 8/12/2013 8:49:22 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsVery reliable, SUPER STRONG signal, very configurable

Pros: Very reliable router never needs reset.
SUPER STRONG signal. Router is installed in a cinder block concrete room and I was able to hold a usable connection at over 500 feet away.
very configurable.

I'm super happy with this router!!

Cons: none

0 out of 1 people found this review helpful. Did you? Yes No

  • Manu V.
  • 8/4/2013 7:40:40 PM
  • Ownership: 1 day to 1 week

1 out of 5 eggsPoor quality control

Pros: None

Cons: Poor quality control

Other Thoughts: sent it without power supply

Manufacturer Response:

Dear Valued Customer,

If you purchased a refurbished router, please contact Newegg about any missing accessories. Since the unit has been opened previously, we at ASUS cannot guarantee that the contents are all there. If you have any problems with Newegg, please contact me at and I will see what I can do for you.

ASUS Customer Loyalty

Did you find this review helpful? Yes No

  • John C.
  • 3/31/2013 9:57:57 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

Pros: Very strong signal, has option of router or access point. This is my second RT-N66U loved the first one I bought another to extend the range of wifi in house. Using the second as a access point.

Cons: No cons

Other Thoughts: The refurbished was not reset by Newegg had all settings from previous owner,easy fix just reset. Also firmware was outdated just updated to newest firmware. And the CFE/bootloader was the old one, had to upgrade the CFE/bootloader. The CFE bootloader upgrade I would only recommend to those with very high tech knowledge. Once all the upgrades were done works like a champ, and saved money.

1 out of 2 people found this review helpful. Did you? Yes No

  • alan j.
  • 3/30/2013 12:47:34 AM
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggsReceived DOA

Pros: The RT-N66U is my favorite router, I own 3 of them. Newegg shipped it out the same day. The router arrived in a sealed static bag, all parts were included. It looks brand new. Power cord was coiled up.

Asus firmware was just updated again 3/21/13 More features and 3g/4g support. Merlin, Shibby, and Victek have been tweaking the firmware making these routers very robust.

Cons: I rolled the dice again on a refurbished RT-N66U. Unfortunately The unit has a heat related problem. After 15 to 30 minutes powered on The LAN/WAN ports die. The port LED's go out, and all ethernet connections quit. Turn it off and let it cool, then everything works fine for about another 15 minutes, then quits again.

I guess I didn't learn my lesson. It's $11 to ship it back RMA, and it will be at least a week before the replacement shows up. I should have just bought a new one.

The prior owners config was still in it, just like the last one. Not quite refurbished.

Other Thoughts: To gain access to the router that has prior owners settings and password. Hold down the WPS button while powering up. This will put it back to default settings.

I don't think These units are refurbished Since they come with prior owners config. They probably don't do more than power them up to see if the pretty blue lights come on. The LAN/WAN problem took 15 minutes to show up, so I don't hold

3 out of 3 people found this review helpful. Did you? Yes No

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Item#: 9SIA0AJ3N90298
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