StarTech.com 2-port Mini DisplayPort KVM Switch - USB 2.0 - 4K at 60Hz (SV231MDPU2),Black

Bought this to handle my new Dell u3415W monitor. The monitor works fine with my 2 systems connected by separate display cables, but have to switch the monitor by going into the monitor settings; this is why I bought this switch. The keyboard and mouse switch fine but the monitor does not work. I called support and they had me unhook everything and reconnect (basically power down the switch and back). That didn't work, I rebooted my laptop and the monitor started working, at least I thought. As soon as I switched away it stopped working and I have not been able to with out rebooting the laptop every time I switch. I could never get the other workstation to display on the monitor. I'm keeping it for now as the keyboard and mouse work fine. I'm pretty disappointed though as this should work without problem.

I have the Mini DisplayPort version, switching my LG 34UM95 between my PC and MacBook. It drives my display perfectly at 3440 x 1440 @ 60 Hz. I have a Model M keyboard with a USB converter, a Microsoft wireless mouse, and a chain of USB hubs with a webcam and other assorted stuff hung off of it, and everything works fine. The "Scroll Lock twice to swich displays" feature does not work; I'm not sure if this is because of the keyboard I am using or because I am using it with a Mac. For what it's worth, it doesn't work from the Windows side either. I haven't tried the bundled software but you might want to give that a shot if you want to put the KVM somewhere where the button on the front is inaccessible.The KVM does not do any sort of emulation of display, mouse, or keyboard; the active computer will behave as if everything is directly connected to it (it will see the monitor's model number and the keyboard and mouse manufacturer instead of generic devices) and the inactive computer will behave as if nothing is connected to it, like the cables have been unplugged. This works out for my use case because it means everything migrates over to my laptop's screen when I flip the main display over to the PC, but it may not be what you want, if you have a computer that behaves badly if a keyboard or display isn't connected when it is booting up.The case is metal and it feels pretty solidly built. It could be heavier; the weight of the cables can easily make it rest off-kilter if it is not positioned carefully. It came with two 6 foot USB and Mini DisplayPort combination cables; if that suits your setup, all you'll need is a cable to connect it to your display. The ports for connecting to the computers are on the back of the unit but the ports for the keyboard/mouse/additional USB are on the front; this is kind of annoying and my desk would look a little less messy if those cables were in the back. The unit appears to be powered by and senses the presence of connected computers through the USB connections; when I disconnect the USB from my laptop, it will automatically flip to my desktop.

Overall a descent and inexpensive switch-box. I purchased for just under $90 which was a great value at the time. I'd give 3.5 stars because of the value, but 4 stars seems a little too high since an advertised functionality doesn't work (hot-key) on Mac.Pros:* Supports 4k - I'm not actually using 4k, but I am using dual 27" Dell U2715Hc (2560x1440) which work great.* Comes with 2 Display-Port/USB molded KVM cables.* Online support is actually pretty good.Main issues:* Ports for keyboard/mouse and shared USB are on the front. This might not bother you, but I prefer all ports in the back.* Hot-key switching (scroll-lock+scroll-lock) doesn't work on my MacBook Pro or Ubuntu box. This is because that key is not natively supported by the OS. It should work with Windows though.* No emulator to keep the computers thinking they are still connected to a monitor when you switch so you don't have readjustment/flickering each time you switch. Ok, I was spoiled with my last switch-box which had this functionality (Avocent), but those are 4x+ the cost.* Only supports USB 2.0 - they really should support 3.0!* KVM cables it comes with are only 3' longAfter trying to get hotkey switching to work and failing, I contact customer support from StarTech.com and they mentioned the following:- Their KVM uses switching macros and that will not work in a Linux environment. The reason is that Linux does not have native "scroll lock" functionality and simulating the function through bash shell is difficult and will not always work.- The MacBook is probably in the same situation as "scroll lock" is not supported and is instead mapped to F14. Unmapping has no effect.- "Android File Transfer" is a program known to cause issues when using KVMs as it can interfere with other USB devices from connecting properly.