Vizio E390i-A1 - Controls and Connections; Back Panel Ports Overview

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Controls and Connections
Ethernet - Connect Ethernet cable from home network.
Coaxial - Connect coaxial cable from cable, satellite, or
antenna.
Optical Audio Out - Connect optical/SPDIF audio device,
such as home audio receiver.
Stereo Audio Out - Connect 3.5mm audio device, such
as sound bar.
HDMI - Connect HDMI device.
Component/Composite - Connect component or
composite device.
USB - Connect USB thumb drive to play photo, music,
or video.
HDMI - Connect HDMI device.
BACK PANEL