As there are two major types of WiFi antennas, the directional and omni-directional. The omni-directional antenna is having a radio signal spreading angle of 360 degree. It has a wider coverage area but weaker signal, is more suitable to be used as the center point of a multi-point connections. Directional has a narrow angle of transmission and it is widely used for point to point connection. Bigger decibels (dBi), or we call gain, is better. A 8–9 decibels gain is good enough for normal home and small office applications. Brands of WiFi antennas that we represent are Asus, D-Link, Netgear and TP-Link.