This unit has been fully tested by connecting a laptop to the input, and then connecting a monitor to each of the output ports.  Everything works as it should.  The unit is also detected in Extron's PCS software and is fully configurable with that software.

The Extron SW HD 4K is an eight‑input switcher for HDMI signals. It is designed for video signal switching between multiple HDMI source devices to a single display. This switcher supports video signals at resolutions up to 4K, as well as data rates up to 10.2 Gbps, 3D, Lip Sync, and HD lossless audio formats. All models feature EDID Minder^®, which maintains continuous EDID communication with connected devices and ensures that the HDMI sources power up properly and maintain correct video output. This switcher provides automatic input cable equalization up to 50 feet (15 meters) on Extron HDMI Pro Series cable. The SW HD 4K Series offers front panel, RS‑232, IR, contact closure, and auto-input switching control options for integration into various environments.