I. Introduction 
1. HDMI Switcher 4 input 1 output
2. The 4x1 HDMI Switch allows a single HDMI sink to access multiple sources. The Switch allows three HDMI devices to be switched easily through one HDMI compatible monitor or projector. The Switch can also be placed at the end of a long HDMI cable to regenerate the HDMI signal.

II. Packing List
1.1 X 5V/1.5A Power supply
2.1 X4*1 HDMI  Switch
3.1 X User manual