The Duo 7d Bi Indoor Omni-Directional Antenna extends coverage of your existing wireless b, g or n device. The antenna design works with wireless routers or access points with two detachable antennas. Use the 0.9m (3 ft) extension cable to position the antennas in the optimum location. The antenna base can be mounted on most surfaces using the included mounting kit. The adjustable antennas tilt 180° & rotate 360° providing optimal signal coverage for most mounting conditions. Use the 0.9m (3 ft) 2-in-1 extension cable to position the antennas in an optimal location Two 7d Bi high gain antennas maximize wireless network coverage Antenna stand is designed to mount on horizontal & vertical surfaces No software /drive installation required 3-year limited warranty Please note: networking components such as switches, routers, UPS & wireless devices require that speeds & standards be consistent throughout the network to gain optimum performance. To avoid compatibility clashes or for advice, please contact us on solutions@ebuyer.com.