This 3-port HDMI switch (HDMI switcher or HDMI selector) receives signals from up to 3 HDMI devices, and outputs to an HDTV / monitor. You can choose your desired HD source with a simple remote control. It's fully compliant with HDMI v1.4 standards, supporting 3D and Audio Return Channel (ARC). You can connect up to 3 HDMI devices to this switch, such as your: * Blu-Ray, HD-DVD, or DVD player; * HDTV boxes, HD PVRs or DVRs, HD recorders; * PS4, Xbox One or Wii U with HDMI output; * Laptop or desktop computers with HDMI output; * HD video cameras or camcorders; This HDMI video switch then sends the original HD signals to your HDTV/monitor, occupying only 1 HDMI port. Best for an HDTV / monitor with only 1 or 2 HDMI ports left, yet still many HD sources to connect. Powered by input HDMI cables, the switch doesn't need a power adapter.