These 9dbi 2.4ghz (Only) dipole antennas are compatible with many Wi-Fi routers and USB/PCI Wi-Fi adapters. Any 2.4ghz Wi-Fi router or adapter that has RP-SMA connectors will work. These antennas will flatten and extend your 2.4ghz wireless beam for greater distance. Features: Brand New & High Quality Price: $27 for 8 x 9dbi 2.4ghz (Only) High Gain Wi-Fi Dipole Antennas Quantity: 8 Band: 2.4ghz (Only) Gain: 9dbi Radiation: Omni Connector: RP-SMA Suitable for WiFi routers and USB/PCI adapters with RP-SMA connector 15.5 inches fully extended and 14.5 inches folded Compliant with IEEE 802.11a, 802.11b, 802.11g, 802.11n wireless LANs Finish: Matte Black