From Amazon Website:
NETGEAR Nighthawk X4S AC2600 (800 + 1733 Mbps) Quad Stream Gigabit Cable Smart Wireless Router, Dynamic QoS/Twin USB 3.0 and eSATA Ports/Beamforming+/IPv6 Support.
Note:Ensure that the factory reset is carried out and then the latest firmware is installed.
1 x NETGEAR Nighthawk X4S R7800 - Wireless router - 4-port switch - GigE - 802.11a/b/g/n/ac - Dual Band
Seems like a good price for anybody that is in the market for one. Expires in 15 hours (at the time of posting)