USB 3.0 KVM Switch HDMI 4 Port Support 4K@60Hz 2K@120Hz RGB 4:4:4 Simulation EDID, HDMI USB Switch for 4 Computers Share 1 Monitor and 4 USB 3.0 Ports with Controller, Power Adapter and KVM Cables

I have a 1440p 144Hz monitor I wanted to hook up to three different computers. It really does seem like the sky is the limit when it comes to what you can pay for a modern HDMI KVM switch. In my case, I just wanted something that could easily switch between my work laptop, personal laptop, and gaming PC.The device is made out of metal and feels very solid. It includes 4 sets of USB 3.0 cables and a single HDMI cable, so you'll need to buy more HDMI cables separately. The device worked immediately upon connecting my computers, but with some interesting limitations:- Windows had some screen artifacts at 144 Hz (RX 6700xt GPU). Switching to 120 Hz made it completely go away.- macOS seemed to be stable at all frequencies.- Linux (GT 1030) works fine at all frequencies.The biggest issue is switching takes time to "stabilize". What I mean by that is, if you switch from one input to another, the screen may flicker on and off several times up to about 10 seconds before it stays solid. Sometimes it just doesn't stabilize, but a simple on/off of the switch on the front of the device always seems to fix it. I noticed that changing all devices to the same resolution/frequency made the symptoms a lot better. I have everything set to 1440p 120 Hz now, which I'm fine with. I'm sure it can probably differ a lot depending on your monitor.I think this is the big differentiator between this and the $400+ devices; suddenly switching very high speed digital signals is very jarring for both the monitor and the computer. Coordinating it properly to not cause resetting of the communication on either end (i.e. the flickering) likely requires expensive hardware.If you need to switch between multiple inputs very frequently, this will probably drive you insane. For me, I just wanted a way to keep my desk clutter free while still having native-speed access to all of my machines with a single keyboard, mouse, and monitor at the push of a button. I spend 15+ minutes at a time on each machine once I switch to it, so the flickering is pretty negligible.For the price, I think this is excellent value for my use case. Even the super high end HDMI KVMs don't come with USB 3.0.UPDATE: Turns out 90% of the random flickering was due to the HDMI port on my laptop dock (Dell WD19TB). Apparently this port is notorious for not playing well with Apple Silicon computers specifically. I switched to an active Display Port to HDMI adapter, and now things are very solid!

I would really rate this a 4.5 because it isn't perfect, but that isn't an option. I have a small homelab with a few small computers running Linux along with my primary desktop. I do most thing through SSH but when I want to re-install or image one of the small computers I got tired of shifting keyboard and HDMI around and getting access to the USB ports to plug a drive in. I've used this for a couple of days now and it seems to work OK.I'm not entirely sure about the EDID simulation and if that is working correctly or not. When I have the monitor plugged in directly to the computer via HDMI the POST screen fills the monitor. When it is through the KVM though it is smaller and offset, but once the OS starts to load it fixes itself. It isn't a big issue in my case, just something odd.One thing I would improve about it would be the ability to disable an HDMI port. In my case I have my small portable monitor mounted as a 3rd monitor on top of my primary screens. This is what I have connected to the KVM. I don't use it often on my primary computer but connected the primary to the KVM for the few times I do use it. This means that it is detected and I'm always losing the mouse of the top of windows up into the black hole. Not a huge issue as I just disabled it in Windows and at least I don't have to go moving plugs around anymore.The other thing I would improve is to light up the button on the remote for the currently selected computer. I keep the KVM behind my monitors where it isn't really accessible and when things aren't showing up like expected it would be nice to see on the remote what is selected.

Had only one system connected. Mac Pro. Everything worked for 2 days (Headset, Keyboard, Mouse, Display). After 2 days, display stopped working. Worked with Amazon on debugging the setup.-- UpdateAfter Amazon support could not help, I returned the product. I got a note through Amazon.com from the seller asking about the defect. Carrie was unrelenting wanted to make sure she understood the root cause of the problem. She worked weekends and off-hours to understand the problem. After going back and forth, we isolated the problem to USB-C/HDMI converter problem for MAC M1 chips. The seller had tested this setup with a specific USB-C/HDMI connector and offered to expedite ship that to me for free in return for giving them another shot.I have not received the connecter yet. But I am upgrading the review to 5 stars because:1. Exceptional customer support2. Doing the right thing by customer3. Understanding the problem and providing a solution4. Standing by their product5. Co-ordinating with the distribution/shipping-- Update 2I received the replacement KVM Switch and the approved USB-C connector from the seller. Same setup (1 LG Wide screen 34" Monitor), 1 Computer (Mac M1 Pro), 1 Keyboard/Mouse (Logitech Trackball). Used the USB-C connector that you shipped for the monitor.The monitor is now being recognized as Generic non-PNP and the resolution is completely messed up. The largest resolution I could choose is 1920x1080/60Hz. After choosing this resolution, the monitor consistently flickers and unusable.-- Update 3After trying several things, what works is unplugging the keyboard/mouse and let the monitor come online when you turn on the power. Then connect the Keyboard/mouse. Then the MAC recognizes the monitor correctly.-- Update 4After couple of days,1. Keyboard.mouse continues to be an issue. Just follow the order of monitor first and then connecting other peripherals2. I see whitegrains every now and then. But turning off/on the KVM switch seems to solve the problemContinue to get good support from the team. Upgrading review.