CKL HDMI KVM 2 Port 4K 30Hz Dual Monitor Extended Display (CKL-922HUA)

My setup is 2 computers sharing 3 monitors. I found sharing one keyboard is unfeasible because I work on both computers (watch videos on one while working on the other). Only issue is if one computer goes to sleep, then all monitors transfer to the other.

For a few hundred bucks I expected something pretty good. I guess that's what this is. I had a single HDMI 4-port KVM that worked great, but now I need a dual monitor version, so I got a different (less expensive) one that signaled the PCs that the monitors were disconnected when I switched to a different machine, so every time I switched back, I had to move some windows back onto the 2nd monitor. This one works fine in that respect (the windows stay put, when switching between machines, and back). It has a quality feel to it as well. But, now the bad:The tiny tiny manual is very poorly written. It took a long time, but I did get a response from the mfg support, because the audio jack wasn't working. TO save someone the time, here's what they said: "This model only support decoded HDMI audio, pls set hdmi audio or monitor A audio as default in the sound settings." Fortunately one of my monitors has very tiny speakers (and they're so weak they have to be turned up all the way to hear them working). BUT I swapped that one to the Monitor A connector, and now the jack works (and so does the decent speaker setup I have connected to it- and it sounds fine, not noisy or distorted).Good thing it has a switch to disable keyboard shortcuts, because when they were enabled (the default) my mouse and keyboard were virtually useless. I really mean useless. Support tells me there no way to update the firmware. That's kinda' pathetic considering that it has four USB computer inputs, and bootloaders are not novel. Also, regarding keyboard and mouse, if you put a PC to sleep, and don't switch away from it with this KVM- the mouse or keyboard will awaken it, as normal. But if you switch away, then switch back- the keyboard and mouse will not wake it. Sometimes unplugging, then re-plugging them works, but most of the time it doesn't. It's aggravating, especially since there's no apparent way to update the firmware (which ordinarily might be able to fix this issue).Also, it has rubber feet. There's no way to mount it vertically. I stuck some velcro on the bottom, but had to pull it off to re-align it. It pulled the regulatory stickers off with it. The feet keep the velcro from making great contact, but it hasn't fallen down in the couple 10 days since I installed it.

I have used various KVM switch boxes over the years, some that were really cheap manual boxes to very expensive and high quality KVM’s. One product kept breaking the audio/mic ability and I had to keep getting replacements for the device. Another brand worked really well, but the company is lagging on the latest technology, like DataPort connections and dual monitor / dual computer KVM's. The CKL CKL-622DP model was easy to setup and pretty much hit the ground running, but I did have an issue that was not portrayed in the web site or manual, but was corrected by customer support. So, if you have any issues with setting up the KVM, I encourage you to contact their technical support staff.Several things I like about the box are it was built well, though putting all input ports in the back would be my preference, but that is not the norm. I also think the power supply could hold the USB cable in better as it is pretty lose and if in an area of traffic, could become easily unplugged. It has a power switch in the back that during troubleshooting was a blessing. My other KVM’s require I remove all connections and then put them all back in. Having a dual monitor / dual computer KVM Means I no longer have to change my monitor settings from one computer to another as I did with my single monitor, dual computer KVM. The product is easy to setup and easy to use manually and comes already setup for KVM control from the mouse. I also liked that I have 4 data ports to use and audio / video jacks for both computers to play through one set of speakers. One of the issues I came across is my keyboard display lights either stay on, no matter the selection or are not on at all, like my Caps lock light. I will contact tech support about that. One other thing I am tolerating and not used to is the delay time between switching. The aforementioned expensive KVM boasted of DDM technology which does make switching between computers almost instantaneous. But, you do pay for that convenience. So, if you don't mind waiting 10 seconds for screens to show up and the keyboard and mouse to work, it is a great KVM box and I recommend it.