Based on dual-core 1.6 GHz processor, WRT1900ACS Dual-Band Gigabit Router is equipped with 512 MB RAM, 4x Gigabit LAN ports, 1x eSATA/USB 2.0 port, and 1x USB 3.0 port. Featuring 4 external antennas that are adjustable and removable, unit is capable of speeds up to 1.3 Gbps on 5 GHz band and up to 600 Mbps on 2.4 GHz band. Router includes Linksys Smart Wi-Fi setup and management tools and offers full open source support in OpenWrt's Chaos Calmer release 15.05.