Consistently Praised for Networking Excellence!
Readers’ Choice, 6 Years Running! (2012-2017)
"No brand is more likely to be recommended than ASUS. The company receives excellent marks for their ease of setup and reliability.”– PC Magazine
Recommended Excellence Award for Best Router Brand, PC Pro Technology Excellence Awards 2016.
Dual-band connectivity for lag-free entertainment
Delivering 2.4GHz and 5GHz concurrent bands at up to 450Mbps and 1300Mbps, respectively, the RT-AC66U B1 has a total speed of up to 1750Mbps. You can perform basic tasks like web browsing and file downloading on the 2.4GHz band, while simultaneously allowing multiple devices to stream in HD or support online gaming and other demanding applications smoothly on the clearer 5GHz band.
Do more at once with dual-core processors inside
The ASUS RT-AC66U B1 features a dual-core processor that eliminates the performance drops that plague other routers. So even on the busiest home networks, HD video streaming is smooth, the latency low for online gaming and VoIP calls, and file downloads are uninterrupted.
Entertainment everywhere, on every device
Exclusive ultra-sensitive receivers give improved mid- and long-range Wi-Fi signal, with high-powered amplifiers and AiRadar beamforming to deliver unrivaled coverage that's fast, reliable and stable for all your connected devices, from PCs and mobile devices to game consoles and beyond.
Ultimate USB speed and versatility
USB 3.0 features data transfers up ten times faster than USB 2.0. Two USB ports make the RT-AC66U B1 perfect for file, multimedia, and 3G/4G sharing, while ASUS AiDisk offers remote access and quick content streaming. Where other routers have their USB ports sandwiched next to one another, both RT-AC66U B1 USB ports are evenly spaced for easy access to either at all times.
Control your network anywhere
In your increasingly mobile-enabled life, having control over your network via an app is more important than ever. The new ASUS Router App is built from the ground-up to be both intuitive and robust, allowing you to setup your router, manage network traffic, diagnose connection issues and even update firmware, all without needing to boot up a PC. 
Product Segment
Coverage
Data Rate
802.11b : 1, 2, 5.5, 11 Mbps
802.11g : 6,9,12,18,24,36,48,54 Mbps
802.11n : up to 450 Mbps
802.11ac : up to 1300 Mbps
Antenna
Transmit/Receive
2.4 GHz 3 x 3
5 GHz 3 x 3
Operating Frequency
Encryption
Firewall & Access Control
Access control：Parental control, Network service filter, URL filter, Port filter
Management
Ports
USB 2.0 x 1
USB 3.0 x 1
Button
Features
Traffic Analyzer
Adaptive QoS
SmartQoS
- WMM
- User definable rules for IP/MAC/Port
- Upload and download bandwidth management
- ACK/SYN/FIN/RST/ICMP with highest priority
AiProtection
Parental Control
Guest Network : 2.4 GHz x 3, 5 GHz x 3
VPN server : IPSec Pass-Through, PPTP Pass-Through, L2TP Pass-Through, PPTP Server, OpenVPN Server
VPN client : PPTP client, L2TP client, OpenVPN client
Enhanced media server (AiPlayer app compatible)
- Image : Jpeg
- Audio : mp3, wma, wav, pcm, mp4, lpcm, ogg
- Video : asf, avi, divx, mpeg, mpg, ts, vob, wmv, mkv, mov
AiCloud personal cloud service
3G/4G data sharing
Printer Server
- Multifunctional printer support (Windows only)
- LPR protocol support
Download Master
- Support bt, nzb, http, ed2k
- Support encryption, DHT, PEX and magnet link
- Upload and download bandwidth control
- Download scheduling
AiDisk file server
- Samba and FTP server with account management
IPTV support
LED Indicator
Wi-Fi x 2
WAN x 1
LAN x 4
Power Supply
DC Output : 19 V with max. 1.75 A current
OS Support
Windows® 8.1
Windows® 8
Windows® 7
Windows® XP
Mac OS X or higher
Linux
Dimensions
Weight
Package Content
RJ-45 cable
Support CD (User manual and utility software)
Power adapter
Quick start guide
Warranty card
Operation mode
Range extender mode
Access point mode
Media bridge mode