Compatability This low-profile, omnidirectional antenna features six elements: a set of three antennas for the 2.4GHz band and a set of three antennas for the 5GHz band. Peak gain is 2.5dBi in the 2.4GHz band and 3.5dBi in the 5GHz band. This antenna was specifically designed for use with 802.11n access points to optimize performance. Cisco Aironet Dual Band MIMO Low Profile Ceiling Mount Antenna - Antenna - Wi-Fi - 3.5 dBi peak (for 5150 MHz - 5850 MHz), 2.5 dBi peak (for 2400 MHz - 2500 MHz) - omni-directional - ceiling mountable, indoor.