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ASUS RT-N66U Dual Band Wireless N900 Ultra Thin Gigabit Router 2.4/5GHZ

This ASUS Router Features: 1. Dual-Band N900 router, 2. 150 Feet more coverage, 3. Graphical Netwrok Map, 4. Client Access time control, 5. 2* USB ports support HDD, MFP
ASUS RT-N66U Dual Band Wireless N900 Ultra Thin Gigabit Router 2.4/5GHZ - 1
Actual product may not be exactly as shown.
ASUS RT-N66U Dual Band Wireless N900 Ultra Thin Gigabit Router 2.4/5GHZ - 68505_l.jpg ASUS RT-N66U Dual Band Wireless N900 Ultra Thin Gigabit Router 2.4/5GHZ - 68505_68505-02.jpg ASUS RT-N66U Dual Band Wireless N900 Ultra Thin Gigabit Router 2.4/5GHZ - 68505_68505.jpg Customer Photos (0)

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Reg. Price: $170.98  CAD
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   Shipping Weight:   2.8 lbs
   Part #: RT-N66U
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Product Videos    [ Edit ]

Features    [ Edit | History ]

The ultra-thin and stylish RT-N66U features a 2.4GHz and 5GHz dual bands for an unmatched concurrent wireless HD streaming; SMB server, UPnP AV server, and FTP server for 24/7 file sharing; a capability to handle 300,000 sessions; and the ASUS Green Network Technology, which provides up to 70% power-saving solution.

Quick Specs:
Package Contents
  • RT-N66U Wireless Router
  • Network Cable
  • Support CD (User Manual/Utilities)
  • Stand
  • AC Adapter
  • Quick Start Guide
  • Warranty Card
Form Factor Desktop
Wireless Transmission Speed 450 Mbps
Height 5.9"
Width 13.8"
Depth 10.6"
Green Compliant Yes
Green Compliance Certificate/Authority REACH
Broadband Transmission Technology Ethernet
Wireless LAN Standard IEEE 802.11n
ISM Band Yes
UNII Band Yes
ISM Maximum Frequency 2.40 GHz
UNII Maximum Frequency 5 GHz
Ethernet Technology Gigabit Ethernet
Number of Network (RJ-45) Ports 4
Number of Broadband (RJ-45) Ports 1
PoE (RJ-45) Port No
Total Number of Antennas 3

Specifications    [ Edit | History ]
General Information  
     Brand Name: Asus
     Manufacturer: ASUS Computer International
     Manufacturer Part Number: RT-N66U
     Manufacturer Website Address:
     Product Model: RT-N66U
     Product Name: RT-N66U Wireless Router
     Product Type: Wireless Router
     Ethernet Port: Yes
     Fast Ethernet Port: Yes
     Gigabit Ethernet Port: Yes
     Management Port: No
     Network (RJ-11): No
     Number of Broadband (RJ-45) Ports: 1
     Number of Network (RJ-45) Ports: 4
     PoE (RJ-45) Port: No
     Powerline: No
     Serial: No
     USB: Yes
     VGA: No
Management & Protocols  
  • Web Based Management
  • DHCP
  • Syslog

     Security Features:
  • NAT
  • SPI
  • DoS
  • MAC Address Filtering
  • PPTP
  • L2TP
  • PPPoE
  • URL Filtering

     Certifications & Standards:
  • IEEE 802.11a
  • IEEE 802.11b
  • IEEE 802.11g
  • IEEE 802.11n
  • IEEE 802.3
  • IEEE 802.3u
  • IEEE 802.3ab
  • EMC
  • R&TTE

     Green Compliance Certificate/Authority: REACH
     Green Compliant: Yes
     Package Contents:
  • RT-N66U Wireless Router
  • Network Cable
  • Support CD (User Manual/Utilities)
  • Stand
  • AC Adapter
  • Quick Start Guide
  • Warranty Card

     System Requirements:

Operating Systems:

  • Windows 7
  • Mac OSX

Network & Communication  
     Ethernet Technology: Gigabit Ethernet
Physical Characteristics  
     Depth: 10.6" (270 mm)
     Form Factor: Desktop
     Height: 5.9" (150 mm)
     Width: 13.8" (350 mm)
Power Description  
     Power Source: AC Adapter
Wireless Specifications  
     Broadband Transmission Technology: Ethernet
     ISM Band: Yes
     ISM Maximum Frequency: 2.40 GHz
     Total Number of Antennas: 3
     UNII Band: Yes
     UNII Maximum Frequency: 5 GHz
     Wireless LAN Standard: IEEE 802.11n
     Wireless Security:
  • 64/128-bit WEP
  • WPA2-PSK
  • WPA-Enterprise
  • WPA2-Enterprise

     Wireless Transmission Speed: 450 Mbps

ASUS RT-N66U Customer Reviews

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding ASUS RT-N66U reviews.
Experience: 1 Weeks
Well, it kinda works sometimes
- Locks you out of the control panel for no reason
- Runs extremely hot (doubt it will make it a year)
- WiFi strength is rather poor
- Stand falls over
- Lousy GUI
This deserves 1 or 2 stars, but since I bought it in store, I can't provide an order number, and therefore can't give anything below 3 stars. This router in no way, shape, or form approaches "satisfactory."
This is basically a shiny $150 hot plate that sometimes gives you 144 mbps from 8 feet away, at least when it's not busy locking you out of the control panel because you tried to do something daring like assigning a static IP to a connected device. So, yeah, protip: don't touch anything in the control panel, or else you won't be able to touch anything in the control panel ever again. Do a google search for "N66U locked out"; actually, "ASUS router locked out" is probably sufficient, since this problem seems to plague many ASUS routers.
Protip 2: enable telnet so you can at least get in and attempt to fix the wacky login problem.
The heat put out by this thing is unbelievable. I propped it up with the little plastic stand, but that's a very short term solution, since it falls over at the slightest disturbance.
GUI is trashy and extraordinarily slow to navigate. Giant buttons, way way too many pages, etc. Well, to be fair, it's only trash when I can actually access it and don't have to hard reset the router to be able to login. Smell mercies and such.
I ended up with this because I was looking for a gigabit router with N that wasn't horribly underpowered and was in stock at the Ottawa store. Next time, I think I'll forget that I now live somewhere with a local NCIX store and just order whatever's on sale. Seriously, this thing is worse in every aspect than my old DIR655, and when did that come out? Like 2007?

Experience: 3 Days
 Verified Owner
Powerful, great range
None so far
Extremely capable wireless router. Only had it a couple of days but it provides me with great range and speed.

Experience: 1 Months
 Verified Owner
Very good performer
Probably the best N router you can get and ever will
Asus build quality
Supports DD-WRT, Tomato and Merlin's firmware
Gigabit LAN all the way
Looks badass in its black suit
Expensive for a N router and a 3 years old model
For the past 4-5 years, I was running an Asus RT-N16 router. A very good performance, only working on 2.4Ghz band however. After all these good years, it was causing random reboots. Even changing some capacitors and the power brick didn't resolve the issue, so I moved to an N66U.

The "Dark Knight" is an expensive N router. You could get a good/decent AC router for the same price. I didn't need AC and don't think I'll need it for the next couple of years. The RT-N66U being the best N router you can get according to many reviews, I decided to get it. I'm not upgrading that much. The RT-N16 was a Gigabit LAN and N router. However, the N66U adds 5Ghz band, which is nice for some of my devices. Wireless-N should be around for many years again.

While the RT-N66U supports third party firmwares and I was using Tomato (Shibby, Victek) on my RT-N16, I decided to stick with Asus firmware for now. It is rock stable (no reboots unless I ask it to) and provides me with all the features that I need right now. I don't have any USB devices plugged into it as I own a Synology NAS. My printer is WIFI.

To sum it up : It is the best N router you can get. If you're looking for that, then buy this one. Asus is one of the best, in my opinion, when it comes to routers. Their RT line is very well built and have nice third party firmware supports. Good job :)

Experience: 1 Days
Quick set up.
during installation pc was not able to connect to the internet. I unplugged the ethernet connection to my pc and plug it back in and voila.
Bought this router last night for 150. 5Ghz is slow but 2.4 ghz is fast. Maybe I need a firmware update. Will play with it some more tonight and see what else it can do.

Experience: 5 Days
-quick and easy setup
-does the job as needed
Its a great router from asus as usual but the cost is rather steep on this one as there are other great options from tp-link and the likes

Experience: 9 Months
Good performance (wired and wifi)
Easy to configure
Quite frankly I have no complaints at all about this router, the only possible con is that it is relatively expensive, but I do not feel the price is unwarranted given the performance and ease of use.

The web configuration is very easy to use, provided you have basic knowledge of what you wish to do. The hardware runs relatively cool - it feels warm but not concerning - and has had no problems in the 9 months I have been using it.

I am currently using this with Sasktel Infinet in place of the Sasktel provided Actiontec V1000H gateway (Sasktel ONT -> Asus RT-N66U -> computer). I was able to set this up very easily through the web inteface: select  manual ISP config, VLAN Tag 1000, and I set my hostname to "V1000H-Router" and copied the MAC from the Actiontec. The router reconnected and everything went perfectly. Sasktel of course, won't give you directions on how to do this, as they would rather have you use their intentionally crippled hardware.

Given enough bandwidth (I have 100/20Mbit), I have been able to stream HD video, play games, and run torrents (legal, of course) all at the same time without any noticeable performance impact between them.

I have only used this in apartment settings, so I can't comment on WIFI capability in a larger house. I get full connectivity anywhere in the apartment.

I have not used this for services like VOIP/TV.

Experience: 5 Days
Exceptionally great coverage throughout the entire house
None yet
Bought this to replace a Dlink DIR615. What a difference! The best coverage area as I have the main router on top floor and still getting full bars in the basement (old house with pretty thick concrete layers). Extremely easy setup although it was kinda weird that I had to plug in input (Cat6 cable) from router (LAN output) to the Main "Input" plug rather than LAN 1 (router) to LAN (Asus) when I had the Asus router setup as Access Point. I tried the original way and it doesn't work at all (LAN to Asus LAN 1). Fast and wide coverage. Anyone living in a house that's looking for a great coverage area, this beast will definitely fulfill your needs!

Experience: 1 Weeks
 Verified Owner
Great range, classy, great default firmware
no wall mount stand included
Easily surpass the D-Link DGL-4500 I had for 4-5 years as it was beginning to choke. I get great range everywhere in my 850 sq ft appartment and the default firmware is top notch. Best router I've owned.

Experience: 15 Days
 Verified Owner
Dual band, reasonable speeds, small, great range
not as fast as I would like
Overall, I'm underwhelmed by this router. The signal strength on the 5GHz bandwidth is low, limiting range. Boosting the power does not seem to help. It occasionally crashes, but that appears to be tomatoUSB bugs. There is a very small performance improvement over my RT-N16 for 2.4 GHz and file serving speed. At twice the price of an RT-N16 I expected more. I do get better through-put on the 5 GHz bandwidth due to less interference but still it is nothing to cheer about.
I probably would have been better off with the WNDR3700 at half the price.

Initially I gave this two stars, but the other day I was about a quarter of a mile away from home and my tablet connected to my tablet managed to connect to my internet. I live in a fairly populated area, so normally other signals should swamp me out at that range. So I simply can't complain about the range on this router.

This review was modfied by poster @ 08-15-14 12:29 PM

Experience: 10 Days
FAST! Huge Range, Custom Firmware available.
The Range on this router is absolutely amazing (both 2.4 & 5ghz). Penetrates walls very well. The firmware can be flashed to ASUS-Merlin or Tomato. Router is incredibly fast.

 NCIX Forum Messages

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Messages about ASUS RT-N66U Dual Band Wireless N900 Ultra Thin Gigabit Router 2.4/5GHZ

Streaming BluRay over wifi (cpaqf1- May 24, 15, 1 Replies) Read this message
Printers in access mode? (Darren_H- Jul 30, 14, 2 Replies) Read this message
does this rouIter have a good QOS? (wiglet- Dec 30, 13, 1 Replies) Read this message
Anyone game with this router with its QOS (wiglet- Dec 30, 13, 2 Replies) Read this message
RE: Anyone game with this router with its QOS (Spork™- Dec 30, 13, 0 Replies) Read this message
access point (jatrader- Dec 03, 13, 6 Replies) Read this message
Where to get a replacement antennae? (zevdawg- Nov 09, 13, 4 Replies) Read this message
Did my Dark Knight Router die? (HaRDcoRE- Apr 15, 13, 7 Replies) Read this message
Will the USB Ports on RT-N66U support 4-Bay Hard (Taylour_M- Jan 30, 13, 0 Replies) Read this message
Using with Telus Gateway (Ryan_K- Nov 29, 12, 2 Replies) Read this message
does this wireless router restrict at G speed? (ASUSpro- Jun 16, 12, 0 Replies) Read this message
Disable this routers provisioning of dns services (crazyea- May 09, 12, 12 Replies) Read this message
Asus RT-N66U (crazyea- Apr 19, 12, 23 Replies) Read this message
Asus RT-N66U USB Printer Problem (Peter_B- Apr 01, 12, 3 Replies) Read this message
Anybody tried putting Tomato on this? (zMihnea- Mar 26, 12, 12 Replies) Read this message

Post a New Message  |    All Messages       Browse NCIX Forums

Forum messages are not reviewed and may not contain accurate information about a product. Message contents are opinions from customers based on their own experience with a product. We do not recommend you make puchasing decisions based on Forum messages.
Reviews from the Web

Below are reviews found on other web sites for this product submitted by customers.

Posted by: ntt @10/04/14
Posted by: ntt @10/04/14
Posted by: ntt @10/04/14
Comment: Legit Bottom Line: Even though the ASUS RT-AC66U Dual-Band 802.11ac was not the fastest wireless router we had, the features and GUI make up for its speed test performance
Posted by: IC9 @06/14/13
Posted by: MG @11/30/12
Comment: We have already seen an ASUS wireless router with similar design, but this is the first time we have ever come across a device that can transmit at 900 Mbps in the wireless segment. Such enormous speed is achieved by simultaneous transmission in each of the two wireless ranges (2.4 and 5 GHz).
Posted by: Maxim_K @08/06/12
Comment: Quick review of the Asus Dark Knight RT-N66U
Posted by: bendak @07/13/12
Comment: ASUS RT-N66U Wi-Fi Gigabit Router Review
Posted by: Ryan_G @03/13/12
Comment: ASUS RT-N66U Dark Knight Dual-Band Wireless-N900 Gigabit Router Reviewed
Posted by: crazyea @02/14/12
Submit a review link   |   Latest 30 reviews
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NCIX provides a 30 day limited warranty on this product.  The remainder of the 1 year warranty is provided by the manufacturer.    Warranty length may vary depending on manufacturer and product.

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All ASUS VGA cards purchased after January 1st, 2001 will carry 3 year warranty services from purchase date. ASUS product warranty is based on the serial number printed. First 30 days limited warranty is through The remainder of the 3 year warranty is provided directly by ASUS. For more details, please visit

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One of the industry’s most complete customer care packages offers a level of coverage that adds to the price of competing products:

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  • 24/7 tech support: 1-888-678-3688

Accidents Happen

You have extra protection when they happen to your ASUS notebook purchased in the US or Canada. ASUS will fix it or replace it for you at no charge during the first year after purchase in the event of damage from accidental spills, drops, electrical surges, or fire.

  • Warranty covering accidental drops, spills, power surges, and fire damage
  • Target 3 business day turnaround time for repair / replacement; not including receiving and shipping time
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  • One incident covered per notebook


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