CKL Triple Monitor HDMI KVM Switch 2 Port with Audio and USB 2.0 HUB, PC Monitor Keyboard Mouse Switcher Box Mirrored or Extended Display 4K@30Hz for Computers and Laptops CKL-923HUA

At home, I have had a multi monitor switch box in play for a LONG time. Started out with a 3 monitor DVI by StarTech, which could switch 3 monitors, keyboard, mouse, and sound across 4 different computers. I loved it for a long time, but then I made the mistake of plugging a powered device to the USB bus and lost the K part of the KVM. So then I added in a separate switch box just for USB switching. Worked well for a number of years. Then I ended up traveling to a different state and had to function there for about 6 weeks remotely. I had monitors there to use, but no extra KVM. In addition the monitors I had were only HDMI. So I decided to buy this little KVM, and boy was I pleased! Having the ability to switch a keyboard and mouse directly again was great. I also am generally switching between a PC and a Mac, so it was nice to know this was compatible on both sides. One item of guidance that the directions had that was ESPECIALLY useful was the idea that it would be better to use an HDMI to VGA or DVI adapter rather than getting specialty cables with HDMI on one end and the alternative connection on the other. I have a ton of those cables laying around because of my old KVM which was all DVI. When I tried one, I found the switch box didn't work so well. But when I used their original HDMI cables with one of those little DVI adapters at the monitor, it worked great. I also find their remote switcher to be very nice, because I have a sit/stand desk, and in order to use the original HDMI cables, they were only 6 feet, and my devices needed to be close to the box. So I mounted it under the desk in a box where the cable run gave me the ability to raise the desk to standing without affecting anything. Once I did this, the switching device was super handy to put just under the edge of the desk near my chair. Now that I am back home, I have ripped out the old DVI, and actually upgraded two of my monitors so that I could get rid of the old DVI connectors and go pure HDMI. The weight reduction alone on my desk was huge getting rid of those old heavy DVI cables. Now it is all nice, clean, and no heavy clunky connectors to deal with.

I bought this unit to switch monitors and keyboard/mouse use between my work and home PCs. For the most part, it handles this task well with a few exceptions... I learned right away that the monitor types work best if you use the same input type. My old work laptop had an HDMI and a VGA output (ditigal and analog) where my home PC had two HDMI outs. My monitors are older and have both DVI and VGA inputs. Everything worked great from my home PC as all of the connections were digital flowing to this box over HDMI, and coming out through HDMI to DVI cables. The VGA output from the work laptop required another converter to turn the signal into a digital one before entering this switch. As a result, I had some resolution and quality differences between the two differing types of inputs. Once I got a newer work laptop with two HDMI outputs, my worries were over in this regard. The reason I'm giving it four stars over five is that on occasion switching back and forth, one of the two systems will "forget" that there is a second monitor long enough to take all of my open windows and cram them on one screen. Fixing it is a matter of dragging and dropping back to the re-recognized monitor. A small annoyance, but enough to make this an imperfect product. Also, once or twice, the keyboard and mouse have stopped working. Power cycling the unit immediately solved this.

Works as advertised, except for a bad cable which took a while to diagnose. But after some use with a known good cable it worked as it should, very smooth and nothing out of the ordinary. Update1: The KVM switch continues to work flawlessly, only needed some changes in the cabling, with updated DisplayPort to HDMI converters. 2 of my three computers are up to full 4K the last one waiting on two new converters and hopefully will get up to max resolution when they are installed. Update 2: In the process of doing a permanent install of this KVM switch. I suddenly started having problems wth one PC on one of the dual displays. No matter what I did I could not get it to be detected by the PC. After a lots of substitution of known good cables and display port adapters. It came down to a bad 9 foot special HDMI/usb cable that I bought special for my KVM project. This is the second cable to go bad. I am reviewing this cable here, because people are using the cable reviews to review the KVM switch. So in fact the 2 display 4 PC CKL KVM is. 5 stars and excellent when used with cables that are not defective. It switches consistently and quickly with good cables. Update3: wonderful KVM, work’s reliably and without complaint. But there is one thing that I discovered. The USB power supply was marginal and would cause occasional problems. Solution is to replace the one supplied with one that can give at least 2 amps of current. More current is more power. If you hang additional devices off the USB port of the KVM it will demand more current then then can be supplied by the supplied USB power supply. The one provided with the KVM just supplies enough current for the KVM it’s self.

This is a great piece of kit. I have it set up with a Windows PC, a chromebook, and a Raspberry PI with dual displays. It works flawlessly. I would prefer to see the remote work wirelessly, but my mind can't see how that could work. This thing is pretty close to perfect

Well, i was sure i reviewed this when I purchased it. This is effectively an update. I purchased this unit because of the pandemic. I started working from home and had to have similar setup to work. I also wanted to be able to switch to my personal PC without having to double everything. This switch is what I was looking for. My first impression when i received the switch is that is was nice and solid. The box is very well made, the switches and of good quality. I started setting this up and found that the instruction were not very good. With a little search on the WEB and youtube, I found additional information that help. I had one problem with the switch. The provided cables were not working very well. The USB connection quality was bad and, if you moved the wires, just a little, you would break connection to the keyboard and the HDMI. So I wrote to the manufacturer explaining my problem. To my surprise, they replied the next day. They said they would send my new cables and that I should received them in a few weeks (it does come from China). They actually showed me the package with the tracking number. Well the cables never arrived. I wrote them again. Again, they replied the next day, wow. I explained that I did not received the cables. They were really good and said they were shipping new cables again. This time, I received them in about a week. Verified the cable and now it works perfectly. The product quality is very good. It does everything I wanted. It also has an additional remove switch to make it simple for the user to switch back and forth between computer, really nice. The service response has been one of the real good one compared to many other places, they actually reply. Just that is very nice. So, the switch is good quality, works well, customer service is really good and they do what they say. What else do you want. Would i recommend this product, ABSOLUTELY. Just make sure you know what you are buying and what you are doing. Don't expect miracles. It does what it should do and does it well. We will see in a year from now if the product lasts Have fun

Made the mistake of not plugging in the device's power supply since it worked at setup, but it performed very oddly without it. There's a bit of lag when switching to my PC (as expected) that surprisingly isn't there when switching to my laptop which might be due to using a HDMI-USB C adaptor on my laptop.

I needed a KVM to assist in working from home. I had tried a more expensive KVM but could not get it to hold the connections in a stable manner so I had to send it back. I searched for another device and found the CKL unit (which was half the price of the previous one). I unpacked it and was surprised how small it was. I connected everything to it and it worked first time and has remained working ever since. I can switch by keyboard, mouse, button or a wired remote. Picture quality is great and my wireless keyboard (KLIM) works with no problems. I am using a DVI-to-HDMI adaptor on my desktop and two Displayport-to-HDMI connectors on my laptop. I also had to get a (Sabrent) external USB sound adaptor for my laptop to connect sound and microphone (the laptop had no suitable ports). The only issue I have had is that, very occasionally, my wireless mouse (Microsoft) sometimes gets over exuberant with scrolling. I have found that if I turn the KVM off and back on again it fixes it (or unplug the mouse dongle and reinsert it). All-in-all a great little device and good value for money.

Had TESSmart earlier and struggled to get two PCs working with Two monitors...absolute rubbish but then replaced with this one and it worked like a charm on first instance...zero trouble. You simply plug all the cables (everything is included in the box) and boom...everything works smoothly. I tried Mac and PC...all works well.