Meet the XtremPro H401S HDMI Multi-Viewer: a 4 by 1 switch that accepts 4 HDMI inputs and lets you take advantage of 5 modes to display them. It supports 1080p 60fps resolution.
The device supports 5 modes (including all 4 on the same screen or only two of them side by side). You can switch between the 4 HDMI input effortlessly. The XtremPro H401S is powered by a 5V adapter.