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Item#: N82E16833320091

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

  • Up to 900Mbps Wireless Data Rates
  • 2.4 GHz and 5 GHz Concurrent Dual-Band
  • Four Gigabit Ethernet Ports
  • Download Master for Wireless Data Storage
  • Detachable High-Powered Antennas
  • Two USB Ports
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RT-N66U Dual-Band Wireless-N900 Router

Incredible Performance With Incredible Control

From the Black Diamond series that brought the world's most powerful router, the RT-N56U, the ASUS RT-N66U dual-band wireless-N900 gigabit router delivers incredible performance and coverage range. With ASUSWRT, quickly setup your network, customize user access and monitor signal strength. Following the award-winning RT-N56U, the RT-N66U increases Wi-Fi speed for both 5GHz and 2.4GHz transmission by 50% up to 900Mbps. This makes the RT-N66U ideal for bandwidth-demanding tasks such as HD video steaming, multiplayer gaming, USB hard drive file sharing and USB-connected printer sharing. Built-in Wi-Fi amplifiers make the RT-N66U the perfect wireless router for larger, multi-level homes and buildings with signal range that reaches virtually any area.

RT-N66U Whether you're a tech-savvy enthusiast or a first-time user, the RT-N66U is exceptionally easy to use with CD-free, Quick Installation Setup (QIS) that let's you plug-n-surf right out of the box and connect PCs, smartphones, tablets and other wireless devices quickly. Thanks to its refined interface tools, you get control like never before. You'll be able to monitor signal strength, set up parental settings and perform other useful functions in a robust and intuitive way.

Key Features

  • 2.4GHz and 5GHz concurrent dual-band transmissions for strong signal strength and ultra-fast connection rates up to 900Mbps
  • Gigabit Ethernet ports for the fastest, most reliable Internet performance
  • Download Master for wireless data sorage and access to router-connected USB storage devices
  • Expanded wireless coverage with detachable high-powered antennas
  • File sharing, printer sharing and 3G sharing via multi-function twin USB ports
  • IPv6-enabled for future proof web surfing compatibility
  • ASUSWRT for easy setup, signal monitoring, and network application control

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.

Dual-Band Connectivity for Lag-Free Entertainment

Delivering both 2.4GHz and 5GHz concurrent bands up to 450Mbps, 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 2.4GHz band, while also simultaneously streaming HD content and other demanding applications smoothly on the 5GHz band.

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.

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 and password listed in your manual and that's it! Now, setting up your network is easier than ever.

Powerful Functions, Easy Management

With the ASUSWRT Dashboard UI you can 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 one-click updates.

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.

Two Multi-Functional Built-in USB ports

Featuring connectivity to devices, FTPs, SAMBA, UPnP AV servers and DLNA support, the RT-N66U makes sharing and networking easier with two built-in USB ports. Download HTTP, FTP, and P2P files to a router-connected USB storage device all day and without a PC. Additionally, the twin USB ports allow for networked printer and file server connections, allowing you to perform multiple tasks at once.

What's in the Box

  • RT-N66U Dual-Band Wireless-N900 Router
  • RJ-45 Cable
  • Support CD (User Manual and Utility Software)
  • Power Adapter
  • Warranty Card
  • Quick Start Guide


  • Processor: Broadcom 470 @ 600MHz
  • RAM: 256MB DDR2
  • Flash: 32MB Flash
  • WAN: 1 x Gigabit Ethernet or USB 3G/4G dongle
  • LAN: 4 x Gigabit Ethernet
  • USB: 2 x USB 2.0 ports
  • Antenna: 3 x external detachable for 2.4GHz and 5GHz
  • Dimensions: 207 x 148.8 x 35.5 (L x W x H)
  • Power Supply: AC Input: 100~240Vac/1.2A 50~60Hz
  • DC Output: 19V / 1.58A
  • Buttons: WPS Button, Reset Button, Power Button
    Wireless Features
  • Frequency: 2.4GHz and 5GHz (concurrent)
  • Data Rate: 802.11n (2.4GHz & 5GHz) up to 450Mbps; 802.11a/g up to 54Mbps; 802.11b up to 11Mbps
  • Output Power: High power: 2.4GHz and 5GHz (user adjustable); 802.11n 17~26 dBm; 802.11g 17~26 dBm; 802.11b up to 26 dBm
  • Encryption: 64/128 bit WEP, WPA-PSK/WPA2-PSK, WPA-Enterprise, WPA2-Enterprise
  • Authentication: Wi-Fi Protected Setup (WPS & PIN)
  • Network Protocol: Automatic IP, Static IP, PPPoE (MPPE support), PPTP, L2TP IPv4, IPv6
  • DHCP: Server, Client, DHCP, Client list, IP and MAC binding
  • QoS: WMM, User definable rule for IP/MAC, Port, Protocol, upload and download bandwidth management
  • Port Forwarding: Port forward, Port Trigger, UPnP, DMZ
  • NAT Pass through: IPSec, PPTP, L2TP, RTSP pass through, PPPoE relay
  • Firewall: NAT and SPI, intrusion detection, DoS protect, Port filter, MAC filter
  • Access Control: Parental controls, MAC filter, Network service filter, URL filter
  • Management: Network map, Traffic monitor, Performance tuning, Telnet server, System log
  • Operation Mode: Router Mode, AP Mode
  • Download Master: Support BT, NZB, HTTP, FTP, E2DK download; Support encryption: DHT, PEX and Magnet Link; Upload and download bandwidth control; Download scheduling
  • DLNA Server: Image: JPEG; Audio: MP3, WMA, WAV, PCM, MP4, LPCM, OGG; Video: ASF, AVI, DIVX, MP2P, MPEG, MPG, TS, VOB, WMV, MKV, MOV
  • Printer Server: Multifunctional printer support
  • File Server: Samba server & FTP server with account management
  • VPN Server: PPTP VPN server

  RT-N53 RT-N56U RT-N66U
© 2012 ASUS Computer International. All Rights Reserved. ASUS is a registered trademark of ASUSTeK Computer. All specifications are subject to change without notice and features are only in select models. Products may not be available in all markets. Brand and product names mentioned are trademarks of their respective companies.


Learn more about the ASUS RT-N66U

Quick Info


  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years

Customer Reviews of the ASUS RT-N66U

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  • Arrow L.
  • 2/27/2015 5:57:15 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsPowerful

Pros: Easy setup and really good range. I have it placed in the stairway of a building. Building is solid brick and concrete and stairway has 12 inch thick concrete floors. Putting it on the 2nd floor stairway I get good service up to the 4th floor. Other routers that I have tried couldn't do it.

Cons: Flimsy power connector, I have this set up high on a wall and don't plan on unplugging too often. I wish there were better wall mounting options.

Other Thoughts: I set this up as an access point. Very flexible software. Very fast shipping from NJ to NYC.

Did you find this review helpful? Yes No

  • Philip K.
  • 2/23/2015 9:06:11 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsDIED and ASUS warranty STINKS

Pros: It worked for about a year, no problem. Thought I was covered by the 2 yr warranty, NOT

Cons: One day my internet stopped working. I went down to find my router dark, no lights. Power cycled and nothing. Tried a different PSU, no luck. Finally I opened a ticket with ASUS (in August 2014). After trying to call them about 10 times, I got thru. Its the most absurd warranty process, open a ticket online, but then you must call them?? WHy can't I just work it thru the website?

Anyhow, finally get "RON" (female) at asus. She first argues with me that I have a fake serial number or something because its not showing up in her system. I told her the "L" could be L, 1 or i . After 5 minutes, she says, oh ya, its I. She says sorry sir, this warranty expired over a year ago.

My receipt from newegg was Feb 2013, she says the warranty for this started feb 2012. I told her but I have a receipt showing 2013, she said nothing they can do. Contact newegg, and they will have to call ASUS to update the purchase data in their system.

I offered to send receipt etc..she said nope, nothing they can do. Oh well, I'm done with ASUS. Going to replace with a netgear nighthawk...

Other Thoughts: I didn't bother calling newegg so I could be wrong. I'm fed up with the process and now I think my two years is actually up by like 2 weeks. UGGGH

Did you find this review helpful? Yes No

  • Paul B.
  • 2/23/2015 5:46:11 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsFlawless

Pros: I'm using this beast for a small office network (about 30 devices) and it works perfect so far, 0 issues with it so far.

The previous router that we had (SMCD3GN) kept losing connection for a few minute at least one a day, now with the Asus rt-n66u i don't have to worry about this any more.

The VPN and FTP features are also a big plus for me for this device.

Cons: None so far

Other Thoughts: Looks really awesome!

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

  • George S.
  • 2/22/2015 3:52:02 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsBlazing speed!

Pros: I bought this wireless router to replace an older dual band Netgear wireless router that was slowly dying.

Read the instructions, follow the simple steps, and you will be up and running in no time.

The 5GHZ band works, and the signal strength is solid through out our 2 story house! Maybe this is the way it was suppose to be, bur we never had that kind of wireless before.

Very happy with this router so far, but it is early.

Cons: The unit gets warm, so I put the router stand on to hopefully get the heat out.

Other Thoughts: I paid for the extended warranty. Was that smart? I don't know we will see.

Did you find this review helpful? Yes No

  • Alexander G.
  • 2/17/2015 6:29:31 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsAwesome router for the money

Pros: - Solid construction
- dual band with good range
- DD-WRT compatible, however I've opted for merlin's firmware for now
- Fast and easy setup
- Good features to cost ratio
- 6 antennas (3 for 2.4Gz, and 3 for 5 Ghz)

Cons: - Price is a bit high, but for the features it's not really that big of a deal
- Doesn't come with DD-WRT installed out of the box, upgrading firmware may be a drawback for some.

Other Thoughts: This is an excellent dual band router. I've had it up now since I purchased it with zero downtime, except for a power outage, which it recovered from beautifully. Overall, i would highly recommend this if you're in the market for a solid router with 2.4and 5Ghz bands and a ton of features

Did you find this review helpful? Yes No

  • Craig W.
  • 2/15/2015 9:20:17 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsASUS RT-N66U

Pros: Fast Connectivity, solid wireless connectivity on newer firmware, ease of use in the web interface, solid performance when gaming and streaming video simultaneously, use for work VPN and such is solid as well.

Cons: 3 Eggs and this is why. 5 eggs for the product's performance to date from May of 2012 - 1 Egg for the power button issue and - 1 more egg for Customer service response to my issue. So my only physical issue with this router is POOR craftsmanship in one specific area, the power button. I paid $180 for this router in May of 2012, so I have tenure on this thing. Never in my life have I had the power button on a piece of electronics that I've ever owned cause me such a headache. CHEAP parts on PREMIUM items does NOT make customers happy. A most likely < $1 part has now disabled me completely from everything I had setup on this router for external FTP, VPN, Internal streaming, internet connectivity etc. for my entire house. The button failed with the router hung on a wall with 0 user interaction physically with it in the last 8 months. So now, because Asus customer support won't send me an RMA before I ship, I will need to buy new because I can't wait for weeks to have my network setup the way I need it. Being a Computer Systems Engineer, that would hamper me from doing my job. Simply put, that's not an option. Now I will consider other vendors for a new piece of hardware because Asus Customer Service still hasn't learned from the days of it's poor motherboard support.

Other Thoughts: I'm a little frustrated with Asus in their handling of any of their premium products. If you're a company that makes products that people rely on for their functionality, you have to stand behind them when they fail due to your poor choices in engineering. (The power button issue is well known on forums) Customer service is key and being told I may need to wait an undetermined amount of time for a fix does not sit well, especially when I'm willing to meet you half way and pay for the RMA until you receive mine. What if your power button manufacturer told you you had to wait possibly 2 to 4 weeks for your next shipment but they couldn't guarantee a date and they couldn't ship you anything you need to tide you over for a bit until the full order was filled? Oh right, then you might go out and find one that does it better, which seems like my option now, Let me reiterate, this is not a product problem, it's a customer service failure to commit to working with the customers even when they want to stick with your product through an issue. If I need to spend another ~ $200 for a comparable product(s) to suit my needs, it makes me automatically gravitate away from the company that will gladly take the money up front but not support me later when it should be a simple fix.

Manufacturer Response:

Dear CWALL74,

First I want to sorry in behalf of ASUS for any inconvenience this issue may have caused you. It's unfortunate if you think the "Product" is a huge disappointment. On the contrary, there are lots of very satisfied customers that are having positive experience using the product. If you I can help you with this issue. I can create an RMA for your router so you can send us the unit back for repair. If you want to discuss this issue further, please feel free to email me at and put case # N150261983 in the subject line for your reference.

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

Thank you for choosing ASUS.

ASUS Customer Loyalty

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

  • Douglas B.
  • 2/14/2015 7:24:23 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsLost all faith in Asus.

Pros: None. Tried everything to get the thing to hold a stable connection. If a router can't even manage to do that with my devices then it's a failed product.

Cons: -Horrible ping and stability between router and devices
-Customer service is terrible. Spoke to them around December 2014 and they said they will email be back, never got anything and it's been 2 month.
-Boxed this in my home and my studio for a TP-Link. Go with them, as they have much better service and quality.

Other Thoughts: Already been 2 months since I've talked to customer service about this product and nothing back from them. I'm trying again, but last time they promptly stopped messaging me in their live chat session. I also bought a PCI adapter from this company and it promptly crashed my desktop with its faulty drivers. I've been buying from these guys from years, and I will tell you that I'm going to actively avoid Asus products as will many of my employees from this experience.

Manufacturer Response:

Dear Valued Customer,

I want to apologize for any inonvenienve this issue may have caused you. I understand the frustration. I want to help you with you issue. I understand that you have issue with the router, did you check the cables with have issue pinging the devices? If you can also please provide me further details with the issue and email it to me at and put case # N150262013 in the subject line for your reference.

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

Thank you for choosing ASUS.

ASUS Customer Loyalty

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

  • Igor P.
  • 2/14/2015 7:36:04 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsGreat while it lasted

Pros: Excellent signal strength, easily handles multiple devices, stable, great admin interface.

Cons: QoS is not very reliable; some admin interface screens are not well thought out. The biggest complaint is with support. My router started having intermittent reboot issues about 16 months after I purchased it and after all the troubleshooting (hard resets, older/newer firmware, new AC adapter that I had to purchase myself because it's not covered under warranty) and 2 RMAs, it's still not fixed. This has been going on since October till February. I'm now asked to RMA it again.

Other Thoughts: I was really hoping that ASUS would come through and do the right thing. Why are they reluctant to just replace the router with a refurbished one or give me a discount for a new one? Four months of RMAs and multiple support phone calls are just too much to pay. My confidence in ASUS is severely undermined by this experience.

Manufacturer Response:

Dear Valued Customer,

In behalf of ASUS I want to apologize for any inconvenience this may have caused you. I understand the frustration. It's unfortunate if you think the "Product" is a huge disappointment. On the contrary, there are lots of very satisfied customers that are having positive experience using the product. If you want I can also help you with RMA of your router. If you want to discuss this further please feel free to email me at and put case # N150262056 in the subject line for your reference.

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

Thank you for choosing ASUS.

ASUS Customer Loyalty

Did you find this review helpful? Yes No

  • Michael W.
  • 2/9/2015 10:52:20 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsThe honeymoon is definitely over

Pros: Easy setup. Worked at first

Cons: Have to reboot the router every couple of days, sometimes 2-3 times in the same day. Some computers can't maintain a connection, but work fine elsewhere.

Other Thoughts: I bought this router, despite the fact that people were reporting these same issues, because ASUS is a strong brand name, and it had a decently high rating. My mistake. As mentioned in the 'Cons' section, I have to reboot the router quite frequently, sometimes it will freeze up on everyone, sometimes just certain computers. I also have a Win 7 laptop that will constantly lose Internet connectivity. It still sees the router, but won't do anything. I either get the yellow exclamation point, or I get a yellow asterisk. This laptop has no problems connecting to any number of other wireless networks, and other devices connected to the network when this happens stay online. I had this issue earlier with my stepson's laptop, and my wife's Surface RT, I ended up having to reimage both of those to resolve this issue. I have even tried a 3rd party firmware to see if that would work. No such luck. I am done with this router, I want nothing more to do with it. When it works, it's great. When it works.........

Manufacturer Response:

Dear MWells,

I apologize for the inconvenience this issue have caused you. I understand that you have unstable wireless issue with the router and I want to help you with it. Did you try changing the wireless channel to either 3, 9, 11. If you can also provide me the router's config file, and router system log, and the firmware version you are currently using. If you want to discuss this matter further please don't hesitate to email me at and put case # N150262026 in the subject line for your reference.

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

Thank you for choosing ASUS.

ASUS Customer Loyalty

Did you find this review helpful? Yes No

  • John N.
  • 2/6/2015 6:49:31 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsAwesome!

Pros: • Very easy and quick to set up
• Intuitive and extensive UI
• Lots of features and capabilities
• Blazing speeds on both wifi and LAN.
o LAN speeds reach limit of my connection 125Mbs
o Wifi at around 40Mbs
• Wide coverage over large 3 story house. Average improvement about 9dbm over previous router
• Quick and painless firmware update
• Attractive design.

Cons: None really. Too soon to talk about long-term experience and reliability. I plan to update this review after several months of use and beyond.

Other Thoughts: I'm not a power user, but, comfortable around IT technology and have lots of stuff on my network. I am also particular about how I set up my network. So, when I needed to replace my Buffalo router I did a lot of research. I settled on ASUS because I've built several PC's with the motherboards and other products and trusted the name. From a design, feature and performance prospective, this router doesn't disappoint.

Read some reviews about the stand not being stable. Because many reviews talked about heat and long term reliability concerns I wanted to have the unit upright to maximize the heat dissipation. Once the stand is snapped into place it is stable even with cables attached to the top.

The only question remaining is will it last. Based on my experience with ASUS I fully expect it will, but, only time will tell.

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

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Item#: N82E16833320091
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