JideTech Displayport KVM Switch 2 Port, 4096x2160@60Hz 4:4:4 Support Wireless Keyboard and Mouse with Audio Microphone

TL;DNR summary -- like the KVM, some minor glitches.Like many people, I am now working primarily at home. I have a home computer (couple year old desktop) and a work computer (Lenovo laptop), and I have had some problems setting up a work environment. Both computers are Linux.Originally I was using one 1080x1920 monitor on each system, and then I combined them into 2 monitors and used a dual monitor KVM setup, but due to space issues, I needed to shrink to using a single larger monitor, but my work system would not handle a 4K monitor. I went with an Acer NITRO XV340CK 2K monitor (3440x1440).I originally tried HDMI, but the work laptop can't handle the Nitro with HDMI, but it could with Displayport. And it did not work with a Displayport -> HDMI cable either.So I've been looking for a KVM that can switch 2K/4K Displayport in a budget under $100. I could find some KVM's that were $200-400 that had good reviews, and I could find a variety of KVM's that had poor reviews, or just were not up to handling Displayport 1.2 and larger displays.I had been manually switching the monitor between the two systems, using a separate USB switch to switch the keyboard and mouse, and manually switching the sound between the systems. It was a big kludge, and at times I would have the monitor on one system and keyboard/mouse on the other, and wonder why I didn't see anything on the screen.A few days ago, the JideTech popped up, and I ordered it. I must admit after having been burned by other KVM's, I did not have high hopes, but at least with Amazon, I could return it if need be.It is nice that I can switch the analog audio as well the mouse and keyboard. My monitor has built-in speakers and those work through the KVM, but because I'm constantly switching between speakers and headphones, I prefer to just use analog audio output/input.After reading some of the reviews, I thought it might have refresh problems above 60Mhz, so I carefully set the refresh rate to 60Mhz on each computer, and it came up great. I was able to bump the refresh rate back to 144Mhz on the desktop and 120Mhz on the laptop, and it worked great. I suspect if I had a 4K monitor, I likely would need to keep the refresh rate to 60Mhz. Some of the failed KVM's I've tried in the past would have visible screen artifacts if the refresh rate was too high.Note, I only use standard USB mouse and keyboard (not wireless). A common complaint is the KVMs that look for a specific keysequence will fail with more elaborate keyboards/mice. So, I am keeping it simple.I noticed 2 minor glitches.The first glitch is when I I used a USB hub/switch that combined several USB devices into one device, and plugged that into a single USB port on the KVM. I found every so often I would lose one of the devices (usually the mouse), and I would need to unplug it and re-plug it back in. I eliminated the USB hub/switch, and plugged both mouse/keyboard directly into the KVM, and I haven't seen a glitch since then.The second glitch is when I switch to the work system, and the screen saver has kicked in and I have enter my password. The background of the screen saver login prompt is only something like 1080x1980, but as soon as I log in, it goes back to the 3440x1440 size screen, and all of my windows are in the same place.

At the end of the day, these have turned out to be pretty solid, almost perfect KVM switches. I experimented with several monitors, the HDMI and DP versions of the KVM, and a boatload of converter cables to find a good configuration. Hopefully my notes below can help other purchasers find the right combination that will work for them.My Acer G235h monitor was ~9 years old and supported only DVI and VGA input so I bought a Tripp Lite DP to DVI active cable and it didn't work well with the DP KVM switch, when I'd switch to my laptop docking station I'd get snow on the screen for several seconds followed by video that would flash for 4-6 seconds and then I'd have a stable picture. A non-active DP to DVI cable was worse, I'd get snow permanently unless I power cycled the monitor and then everything would be fine until I switched to the other port.I replaced the monitor with an Asus VP247QG monitor and eliminated the converter cable and things started working really well. I don't know whether my ancient monitor, the converter cables, or a cranky docking station was the problem but the new monitor with no converter cables works almost perfectly.The HDMI version of this KVM switch was pretty similar -- it was a mess with my old monitor and a series of converters involved. I had all kinds of issues ranging from the occasional wrong screen resolution to flashing video after a switch to a display of "static" which eventually turned into a solid picture some of the time.Replacing the monitor and eliminating all of the converters solved virtually all of the problems with the HDMI version of the KVM switch although it still takes it ~3-5 seconds to get video when switching to my laptop computer.So what's not perfect now? About once a day (14+ hours of use) the KVM will "reset" and switch to port 1 (my desktop computer). This really isn't a big deal, it is very infrequent and doesn't hurt anything. It might be tied to my somewhat unusual RGB backlit mechanical keyboard but I don't care enough to swap in a regular keyboard for testing.Everything else is flawless, you’d never know you were hooked up through a KVM switch!Other points:I didn’t test the audio/mic portion of the KVM, I prefer to hear the sounds coming from both systems.The manufacturer's customer service was outstanding; they were patient throughout the whole process and offered suggestions at every step.One other note: the documentation doesn't mention plugging in the power supply that comes with the KVM; make sure you plug it in first, then connect the input/output devices to the KVM.The bottom line: These are solid, nearly perfect DP and HDMI KVMs with the right hardware attached.