USB 2.0 has maximized the transmission speed and increased bandwidth which could be used in two unidirectional data paths: one is to receive data and the other is to transmit data.
WIFI 2.4G
Enjoy your favorite on-demand content at a great lick through your existing network with built-in Wi-Fi.
HDMI 1.4
HDMI 1.4 supports high speed in picture transmission, allows it to send audio data “upstream” to a surround audio system, eliminating the need for a separate audio cable.