ASUS RT-AC51U

RJ45 for 10/100 BaseT for WAN x 1, RJ45 for 10/100 BaseT for LAN x 4
USB 2.0 x 1

USB 2.0 x 1

SmartQoS
- WMM
- User definable rules for IP/MAC/Port
- Upload and download bandwidth management
- ACK/SYN/FIN/RST/ICMP with highest priority
Parental Control
Guest Network : 2.4 GHz x 3, 5 GHz x 3
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

2.4GHz,5.0GHz

64-bit WEP,128-bit WEP,WPA2-PSK,WPA-PSK,WPA-Enterprise,WPA2-Enterprise,Radius with 802.1x,WPS support

NAT and SPI (Stateful Packet Inspection) Firewall,- enable/disable WAN ping,- allow access from WAN,- log of accepted and dropped,Filtering:,- Single Port and Port Range,- URL based,- MAC Address,- DoS protection

PPTP server
OpenVPN server
PPTP client
L2TP client
OpenVPN client