Linksys WRT1900AC Dual Band Smart Wi-Fi Wireless AC Router (2.4 + 5GHz) - (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty Four High-Performance Antennas for Maximum Coverage and Reliability - to provide strong, reliable Wi-Fi coverage throughout your home, the WRT1900AC is the first router to feature four external adjustable antennas that ensures your Wi-Fi signal is always at maximum strength. Fastest Dual-Core ARM Processor to Surf, Stream, and Game Simultaneously Most Advanced Wired Connections - the WRT1900AC is equipped with four Gigabit Ethernet ports - which are 10x faster than Fast Ethernet to provide the fastest wired speeds. Advanced Security to Stay Safely Connected - to keep unauthorized users from accessing your data, the WRT1900AC offers Wi-Fi Protected Setup along with WPA2 encryption and an SPI firewall for maximum network security.