4×1 Quad Multi-Viewer with Seamless HDMI Switch, 4 Ports HDMI Switcher Support Multiplexed HDMI 4-Input and 1-Out 

Feature:

1. Supports 4 HDMI input ports.
2. Supports 1 HDMI output port.
3. Compliant with HDMI 1.4
4. Supports multiplexed HDMI 4-input and 1-output.
5. Supports up to 4Kx2K@30Hz High Definition resolution.
6. Supports 4by1 Quad Multi-viewer and seamless switch.
7. Supports 720/1080p/4K output resolution.
8. Supports audio switch.
9. Supports fast switching.
10. Supports Equalizer TMDS Output: 25MHz–225MHz TMDS clock.
11. Supports Blue-Ray 24/50/60fps/HD-DVD/xvYCC.
12. Supports 4K input up to 15 meters and output up to 20 meters ( Cable standard AWG26).
13. Inputs can be switched with the IR remote controller, also can be controlled by built-in button.
14. Extend the transmission distance and improve transmission signal.
15. Compatible with DVI through a HDMI to DVI adapter.
16. Supports hot plug-and-play.
17. LED indicate signal and power mode.
18. No loss of quality.
19. Installs in minutes.

In order to prove the robust structure,  we did drop testing in the factory for one of our customers Philips

And here comes the testing results, all buttons are in right position, function is in good condition.