4K HDMI KVM Switch 4 Port 2 Monitor - 4 Input 2 Output for PC, Laptop, Gaming & Work Setup | Seamless Multi-Device Control for Office, Home & Studio

This review covers the 4-port Dual Monitor Extended Display KVM SwitchI'm giving this KVM switch 5 stars, but I do want to give a heads-up that I needed to install USB Overdrive (shareware) on my MBPs to get it running 100%.I bought this KVM switch to replace an older IO Gear KVM switch. The IO Gear was DVI and only supported one monitor. I've been running with dual monitors and manually switching the inputs on the extended monitor so I figured it was time for an upgrade. Shopping around, I found the prices for KVM's that supported dual monitors in extended display mode ridiculous...Then I found this CKL-944HUA KVM Switch!! Wow!! A fraction of the price of its competitors - great, solid build - and it's working perfectly! I'm running it with a mid-2015 MacBook Pro, a 2018 MacBook Pro, a Lenovo Thinkpad, and a Dell Inspiron desktop. It switches flawlessly between all of them.I did have an initial issue with my MacBooks (surprise, surprise). Everything seemed to be working right out of the box, so I was thrilled - but then I quickly found out that my mouse clicks were not working (I tried 3 different wired mice).I contacted the CKL support and they gave me two suggestions:Try the CTRL+CTRL+L hotkey (not sure exactly what that enabled/disabled). It "worked" in that I was able to click - so again I was thrilled - but then quickly realized that I couldn't click AND drag! lolSo, on to the second suggestion: Install "USB Overdrive" - a well known piece of software that is a "device driver for macOS that handles any USB or Bluetooth mouse, keyboard, trackball, joystick, gamepad or gaming device from any manufacturer and lets you configure it either globally or on a per-application, per-device basis."USB Overdrive is shareware - $20 if you want to play fair - but worth every penny. IT WORKED!With USB Overdrive installed everything is working flawlessly with my two MBPs and the KVM Switch. Super smooth hotkeys (with several configuration options), fast HDMI switching, and no audio, mic, keyboard, or mouse issues.It just works!If you're familiar with the 2018 MBP, you know it's dongle hell!! I had all kinds of problems when I was manually switching inputs on my second extended monitor - but having the KVM controlling the switching - and leaving my monitors on just one input - everything is working great.It was almost 4 stars because it didn't "just work" right out of the box, but - given how temperamental MBPs are in the first place, and given the FANTASTIC support from the CKL folks (not to mention, price!! Wow again!) - this KVM switch is absolutely 5 stars!!!One final note, because this product page currently supports 4 different switches, make sure you're selecting the right one - specifically whether you want "mirrored" displays or "extended".