Review on HDMI Splitter 1x2 for Dual Monitors, 4K HDMI Splitter for Duplicate/Mirror Displays, 1 in 2 Out HDMI Amplifier for Full HD 1080P 3D 4K@30HZ Splitting (One Source to Two Displays) by Robert Moloney

The product works fine, but when connected to a laptop and configured to only project a second display, it does not support dual monitors. Works great as a switch, but you have to disable one or the other for it to work or you just get noise. It supports extending and duplicating to each monitor, but only one at a time. Again, all other features work well: 4k signal, zoom up and down, and 3D have all been tested successfully. It also fully supports the Gaomon PD2200 graphics tablet, but requires recalibration. Sending a signal from the Xbox One to two screens at the same time works great.