English 
- Brand: Asus
- Model: RT-AC51
- Interface:
- 4 x 10/100 Mbps-LAN-Ports
- 1 x 10/100 Mbps-WAN-Port
- WiFi frequency band: 2.4 GHz / 5GHz
- WiFi standards: IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac
- WiFi datarates: 802.11n : up to 300 Mbps
- 802.11ac: up to 433 Mbps
- Features:
- Router App
- SmartQoS
- WMM
- User definable rules for IP/MAC/Port
- Ipload and download bandwidth management
- ACK/SYN/FIN/RST/ICMP with highest priority
- Traditional QoS
- Parental Control
- Guest Network: 3 x 2.4 / 5 GHz
- IPTV support
- Beamforming
- Protocol:
- IPv4
- IPv6
- Random Access Memory: 64 MB RAM
- 16 MB Flash
- Encryption: 64-bit WEP, 128-bit WEP, WPA2-PSK, WPA-PSK, WPA-Enterprise , WPA2-Enterprise , WPS support
- Antenna Type: 4 x external 5dBi
- LED display: Power x 1, LAN x 1, Wi-Fi x 1, WAN x 1
- Scope of Application: Indoor
- Operation mode: WiFi Router-Mode
- WiFi Access-Point Mode
- Dimensions: 17.7 x 12.6 x 3.4 cm
- Weight: 271g