Router was lightly used for about two years, firmware is updated and it's been reset and tested, ready to go. Includes the box, power adapter, the four external antenna, and the document CD (documentation is also available on the Linksys website). Features and Specifications: - Smart Wi-Fi concurrent dual-band 802.11ac - Tri-Stream 160 technology - N600 + AC2600 Mbps - 4 x 4 with Three (3) Spatial Streams - Dual-Core 1.8 GHz processor - Four (4) External Antennas - Four (4) LAN Gigabit and One (1) WAN Gigabit Ports - One (1) USB 3.0 Port - One (1) eSATA / USB 2.0 Port - MU-MIMO technology - Advanced Beamforming technology - Open Source Ready Firmware (for OpenWrt or DD-WRT)