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• 802.11ac dual-band wireless at up to 733 Mbps for high-performance wireless
• Expanded wireless coverage with two detachable high-gain antennas
• USB port for printer networking, storage sharing, or 3G/4G connections
• ASUS AiCloud app to access, sync, share and stream your files on the go –quickly and easily
• Easy 30 second setup and robust controls like network monitoring through ASUSWRT dashboard

Dual-band connectivity for compatibility and performance
Delivering 2.4 GHz and 5 GHz concurrent bands at up to 300 Mbps and 433 Mbps, respectively, the RT-AC51U has a total speed of up to 733 Mbps, and maintains complete stability. Perform basic tasks like Web browsing and file downloading on the 2.4 GHz band, while simultaneously allowing multiple devices to stream in Full HD or support online gaming and other bandwidth-demanding applications smoothly on the clearer 5 GHz band.
No more dead zones with 150% the coverage
Powerful two-way transmission improves Wi-Fi range by 150% compared generic routers, ensuring far-reaching coverage. The unique design of RT-AC51U means a connection you can always rely on.
Robust control and optimization with ASUSWRT
With the ASUSWRT dashboard UI, setup, monitor, and control network applications all in one intuitive area. On top of 30-second setup, multi-device detection, and flexible settings that make the most of your network performance, it’s been upgraded with quick scanning of USB storage connected to routers to verify data integrity and drive health. Dual WAN enables having two connections/ISPs on one router, with load balance and failover mode for added stability and redundancy to ensure uninterrupted internet access.
Do you game a lot, or spend most of your time streaming videos? Whatever your planned use is, the RT-AC51U has Quality of Service (QoS) standards that let 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 graphical interface. 

• Network Standard: IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac, IPv4, IPv6
• Product Segment: AC750 complete AC performance; 300+433 Mbps
• Data Rate: 802.11a : 6,9,12,18,24,36,48,54 Mbps, 802.11b : 1, 2, 5.5, 11 Mbps, 802.11g : 6,9,12,18,24,36,48,54 Mbps, 802.11n : up to 300 Mbps, 802.11ac: up to 433 Mbps
• Antenna: External 5 dBi antenna x 2, Internal PCB antenna x 1
• Operating Frequency: 2.4GHz/5GHz
• Encryption: 64-bit WEP, 128-bit WEP, WPA2-PSK, WPA-PSK, WPA-Enterprise , WPA2-Enterprise , Radius with 802.1x, WPS support
• Firewall & Access Control: - Firewall: SPI intrusion detection
  - Access control: Guest access, Parental control, Network service filter, URL/Port filter
• VPN Support IPSec Pass-Through, L2TP Pass-Through, PPTP server, OpenVPN server, OpenVPN client
• WAN Connection Type: Internet connection type : Automatic IP, Static IP, PPPoE(MPPE supported), PPTP, L2TP, Dual Link support, Multicast Proxy Support
• Utilities. Download master: Support BT, NZB, HTTP, ED2K, Support encryption, DHT, PEX and magnet link, Upload and download bandwidth control, Download scheduling 
  - Media server:
  ．Image: JPEG
  ．Audio: mp3, wma, wav, pcm, mp4, lpcm, ogg
  ．Video: asf, avi, divx, mpeg, mpg, ts, vob, wmv, mkv, mov
  - Professional QoS:
  ．WMM
  ．User definable rules for IP/MAC/Port
  ．Upload and Download bandwidth management
  ．ACK/SYN/FIN/RST/ICMP with Highest priority
  - Guest Access:
  ．2.4GHz guest network x 3, 5GHz guest network x 3
  - Printer Server: 
  ．Multifunctional printer support(Windows only)
  ．LPR protocol support
  - File server: Samba and FTP server with account management
  - Network map
  - Traffic monitor
• Ports: 1 x RJ45 for 10/100 BaseT for WAN, 4 x RJ45 for 10/100 BaseT for LAN, USB 2.0 x 1
• Buttons: WPS Button, Reset Button, Power Button
• LED Indicator: USB x 1, LAN x 1; Wi-Fi x 1, WAN x 1, PWR x 1
• Power Supply
  AC Input : 110V~240V(50~60Hz)
  DC Output : 12 V with max. 1 A current
• OS Support: Windows® 10, 32bit/64bit, Windows® 8, 32bit/64bit, Windows® 7, 32bit/64bit, Windows® Vista, 32bit/64bit, Windows® 2000, Windows® XP , 32bit/64bit, Windows® Server 2003, Windows® Server 2008
  Mac OS X 10.1, Mac OS X 10.4, Mac OS X 10.5, Mac OS X 10.6, Mac OS X 10.7, Mac OS X 10.8, Mac OS X 
  Linux Kernel (Support Ubuntu only), Linux
  AndroidTM
• Dimensions: 189 x 129 x 36 ~ cm (WxDxH)
• Weight: 270 grams
• Package Content
  ．RT-AC51U Wireless-AC750 Cloud Router
  ．RJ-45 Cable
  ．Power Adapter
  ．Quick Start Guide
  ．Warranty Card
  ．Support CD (User manual & Utility software)
• Router Special Features
  3G/4G data sharing, AiCloud, Printer server, Download Master, AiDisK, Multiple SSIDs, Parental Control
• Operation mode
  Wireless router mode
  Access point mode