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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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  • Jonathon K.
  • 1/28/2015 7:15:27 AM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsjust didn't last

Pros: over all a good item did everything i needed and then some.

Cons: WAN connection just stopped registering the cable. Changed cable even tried different modem no change.

Did you find this review helpful? Yes No

  • Tommy M.
  • 1/26/2015 10:41:25 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsOpen Source Workhorse

Pros: - Fast
- Efficient
- Open Source
- Dual Band
- Reliable

Cons: Zero, honestly. Does what it says on the box and then some.

Did you find this review helpful? Yes No

  • Will B.
  • 1/23/2015 2:21:20 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

3 out of 5 eggsWorks well, when it works

Pros: The unit looks very nice, comes with detachable antennas (so you can connect different ones, if desired), the admin UI is good and the auto-firmware-check seems to work properly.

Cons: The power connector is insanely small and fragile. The connection part is just a little bigger than a push-pin point. I really have to wonder who thought this tiny connector was okay for consumer-grade devices??

The middle antenna is too close to the WAN Ethernet port, causing antenna positioning problems.

This router is very temperamental. After the router was first plugged into power and the cable-modem performed the auto-firmware-update the admin UI suddenly became unavailable and the wired Ethernet ports stopped working, although wireless continued to work properly. I performed a factory reset and set everything back up the way I wanted, and after adjusting the QoS settings (again) the same thing happened. Did a factory reset again and didn't touch the QoS settings and the router seems to be hanging in there now.

The reports by others of the router running hot is definitely true with my unit. It doesn't burn to the touch, but I'm concerned that this router will start acting up or will die when summer rolls around. I imagine I'll need to find a small fan to strap to this.

Overall, I feel like the designers of this router had a good 'concept' in mind, but the execution of that concept is worryingly unstable.

Other Thoughts: We purchased this Asus router to replace a dying LinkSys unit from 2007. I went by reviews from both Newegg as well as another very large vendor's website. I did see the "DOA" and "died after a few weeks" reviews, but compared to other brands this Asus unit didn't seem to be any worse.

I've used Asus motherboards and video cards for quite a long time, both for myself and customers, and usually Asus comes through, but this router has given me reason to worry...just how long will this thing last? Will it give out right after my warranty expires? (sigh)

The router is functioning properly at the moment, but I feel that it's borderline defective due to the unstable / unpredictable behavior it has displayed when adjusting something as simple as QoS in the admin UI.

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  • Joseph W.
  • 1/19/2015 11:02:34 AM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat Product

Pros: Worked great out of the box. Used it with 2 engenious antennas for my 300 foot long motel. Great coverage in all rooms. Have had to rest one time in a year.

Cons: None

Did you find this review helpful? Yes No

  • Michael W.
  • 1/17/2015 4:48:37 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsDisappointing...

Pros: Easy to set up, works well when it works.

Cons: Drops connection almost daily(Sometimes 2 or 3 times in a day). No moving anywhere in the house, it will work one second, stop working the next, and require either multiple connection attempts or a complete reboot to reconnect.

Also not giving any better of a signal strength than the 'no antenna' model I was using previously.

Other Thoughts: I have been trying to make this work, and I am still having the same issues. I see other people who have issues with machines dropping and having to be reconnected over and over. I thought Asus was a name I could trust, that may be my biggest mistake as far as home computing equipment and limited budget are concerned.

I will probably try a 3rd party firmware to see if that helps, and then warranty the device, since it says it has a 2 year warranty.

Did you find this review helpful? Yes No

  • Jeffrey M.
  • 1/8/2015 5:07:06 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat router

Pros: I was dreading setting it up because that's the last thing I want to do after coming home from an IT job, but it was actually fairly painless. I was replacing an old Netgear that my roommate bought no less than 10 years ago and was on its way out. Significantly increased the speed on both 5GHz and 2.4GHz bands as well as the wired connection (next to the router and wired went from around 30Mbps to closer to 55Mbps. A little slower on the wireless). Signal strength increased an incredible amount. DD-WRT open source is always nice, but I haven't gotten around to flashing it yet.

Cons: LEDs are a little dim. Most people would consider this a plus, but I actually liked that my old router lit up my living room at night. It made walking around the house at night much easier

Manufacturer Response:

Dear Jeff,

We appreciate your time in posting this review and we're so happy to know that your satisfied with the unit. It's good to hear a good feedback from one of our customers. If in any case your going to need help with the unit please feel free to email me at and put case # N150129425 in the subject line for your reference.

ASUS Customer Loyalty are dedicated in helping you and all other ASUS customers.

Thank you for choosing ASUS.

Best regards,
ASUS Customer Loyalty

Did you find this review helpful? Yes No

  • Daniel R.
  • 1/2/2015 9:33:56 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsGreat router

Pros: Easy to setup and configure. Firmware is an officially supported ASUS version of DDWRT. Has enough built-in support in the interface to cover the large majority of use cases. Strong signals.

Cons: The interface is ugly and clunky feeling. Like a late 90's early 2000's feel. Also a bit unorganized if you compare it directly to the DDWRT interface. Does not have as many options as DDWRT even though it is built on that firmware which I found slightly disappointing.

Other Thoughts: Outside of the minor interface issues, this router is nothing but "Win". Update to latest firmware before you do anything with this router.

Did you find this review helpful? Yes No

  • Randall N.
  • 12/23/2014 10:36:16 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsAsus tries to cheat from paying rebate

Pros: Product is fine...But this company (Asus) and also this vendor (Newegg) conspire to make rebates so difficult so as to be almost useless.

Cons: After jumping thru numerous hoops you wait weeks to get denied for crazy reasons. It borders on advertising dishonesty as if a rebate would be a simple matter rather than a royal PITA which they count on so there are a limited number of actual rebates payed out.

Other Thoughts: This involves this product and a rebate denial for sending an order summary that included product, price, vendor (Newegg), and payment method (Paypal) Nothing else would be on the packing sheet or any other paperwork btw. I sent the original bar code cut from the box so they know I got it....its just a scam by Asus and Newegg...Beware.

0 out of 7 people found this review helpful. Did you? Yes No

  • Seth F.
  • 12/23/2014 9:43:36 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

1 out of 5 eggsWorks great until it dosn't

Pros: It works great until it decides to randomly just drop the connection.

Cons: Randomly drops connection without any external cause. I have had it for just over a month and now it is randomly dropping connection for hours at a time and I can't get a refund or an RMA because my problem occurred just over a month after purchase. I know its the router because I can plug right into my modem and be just fine. whenever I tell it to check for firmware updates it says it already has the latest firmware. You can restart the thing a dozen times but you will only get your connection back when it feels like giving it back.

Other Thoughts: This router has seriously shaken my faith in asus and newegg customer service. don't know if I will be buying form either again.

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

  • Jason F.
  • 12/22/2014 7:36:23 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsGreat until the weird power adapter quits

Pros: Open source, many choices for firmware to fit any need
The stock firmware was good enough I never needed to flash
USB ports
Good range
Looks good

Cons: They used a really odd power adaptor, the end is needle-thin, and looks like it could break off very easily. It's 19v why not something more common? After 6 months of use it just gave up the ghost right in the middle of me watching a movie, it was on a surge protector strip, there was no surge, everything else on the strip is working fine, now I have to decide if I want to deal with the nightmare of customer service, if it was a more common adapter I could just run down to Radio Shack and I would still be gushing about my router.

Other Thoughts: I should be able to run down to radio shack and for under 10 dollars have my router up and running, but no now I have to deal with a customer service that from all the reviews and other places I have researched sounds like a horrible experience.

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

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Item#: N82E16833320091
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