The RFFM4558 is an 802.11ac Front End Modules that consists of Power Amplifier, SPDT Switch, LNA, Filtering and a power detector. The FEM operates from 4.9 GHz to 5.9 GHz while providing a gain of 32 dB, linear output power of 20 dBm with a 1.8% EVM. The module requires a 5V supply and draws 195 mA of current. It is available in a 2.5 x 2.5 mm laminate package. The RFFM4558 support Multi-User Multi-Input Multi-Output (MU-MIMO) with up to 8x8 antenna configurations, allowing gateways to deliver multiple wireless streams simultaneously to different devices, including new 4K Ultra-High Definition (UHD) televisions and DVD players. Additionally, the 1024 QAM modulation capabilities enable the highest data rates possible in Wi-Fi solutions.