Linksys Smart Wi-Fi AC1600 Router (EA6400) (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty Wireless AC Technology - the Linksys EA6400 uses the next generation Wireless AC technology for powerful networking Ultimate Speed - Up to 3x Faster than Wireless N - With the Linksys EA6400 Experience, speeds approximately 3x faster than Wireless N (N300 + AC1300. Beamforming Technology - Focuses wireless signal from router to the client device for optimal performance USB 3.0 Port - Add external storage or other devices to share across your network. USB 3.0 transfer rate is 10x faster than USB 2.0 Advanced Security and Guest Access - Wireless WPA/WPA2 encryption and SPI firewall help keep your network safely connected. Easily secure your network, while providing guests with Wi-Fi access