This device is designed to let you share one monitor among multiple computers. Having all the ports (4 input and 1 output) on the back makes is easier to set the switch on a shelf . The power adapter plugs into the side though (which is unfortunate)

My configuration is a main windows computer with multiple (4) monitors. One of those monitors is connected via this switch (and the switch in turn is connected to my main plus two additional computers - so one of the monitors on my main computer is shared (with other computers) via this switch. Normally everything works fine, until my windows based monitor sleep function kicks in and shuts off the shared monitor. The Club3D switch responds by seemingly disconnecting that monitor from the main computer. Now, when windows sees that a monitor in your shared monitor configuration has been disconnected, it takes all the open application windows that were displayed on that monitor and moves them to one of your other monitors. If you have multiple monitors and wish to use this switch to share one of them with multiple computers - this is not the device for you! (or your must turn off screen timeout / sleep functionality in Windows)

If you are using this in a basic configuration - 1 monitor shared by up to 4 computers, then this could probably work for you (although a monitor that is "asleep" will still consume power. If, however, your shared monitor is one monitor in a multi-monitor configuration on one of your computers - then this switch is not for you. I suspect that the switch manufacturer thought of this as a feature (if a monitor goes to sleep lets automatically disconnect it and do something else??) For me, I have this configuration, and as the documentation did not clearly state this behaviour, I need to give it a failing grade here.