CKL USB3.0 HDMI KVM Switch 4K@60Hz (4 Computers 2 Monitors)

I've had a Depzol KVM since 2021, and it's worked well (2 Port KVM Switch HDMI Dual Monitor 4K 60Hz, DEPZOL KVM Switch for 2 Computers 2 Monitors with USB 2.0 HUB and Cables 922HUA-2). However, there were two challenges: the USB ports only supported 2.0, and the cables split out the input/output audio jacks in a way I found annoying.I upgraded to this device (CKL 2 Port USB 3.0 KVM Switch Dual Monitor HDMI 4K 60Hz, Keyboard Video Mouse Peripherals Switcher for 2 Computers 2 Monitors with Audio 922HUA-3) today. It only took me minutes to switch over to the new KVM. Since it supports USB 3.0, there was no need for separate audio hookups. Everything works, including the sharing of a Focusrite Scarlett 18i8 for audio inputs. It also supported my Panasonic Lumix G9 as a webcam using the Elgato Camlink 4K adapater, which wasn't happening before with the old hub. Using USB 2.0, I had a lot of latency (which is to be expected; I'm surprised it worked at all honestly). Now I can use ONE webcam for both devices.If you buy either device, it is incredibly important to note that you will likely need HDMI/USB adapters to support two monitors. From the product description: "This Dual Monitor KVM Switch requires 2 HDMI input for each computer and 2 HDMI output for monitors. However, most computers especially laptops do not have dual HDMI output, thus reliable adapters will be needed for non-HDMI outputs like VGA, DVI, USB C, DisplayPort. Please be aware of this before order!"You will need two adapters - one per computer. Plus, it can really be a headache to get those adapters to work. That isn't the fault of the KVM; those adapters are very finnicky. I purchased this one: "WAVLINK USB 3.0 to HDMI Universal Video Graphics Adapter with Audio Port". You will need to absolutely scrutinize the specifications to meet your needs: It is supported on your device/OS? Does it support the monitors you use? Do you have enough free USB ports? Do you need to install a driver for it to work? etc. No matter what, it will require a lot of patience. A lot. It will be the hardest step, guaranteed.There's a power adapter that comes with the device, but I don't use it. I also don't use the USB ports intended for keyboard and mouse. Why? I'm using Logitech Bluetooth devices that have their own ability to connect to multiple devices. Maybe it would save me the step of manually switching over the keyboard/mouse if a used a wireless fob instead of Bluetooth, but I'm fine the way it is.

The short story is, it works. It's finnicky and has a couple of warts. But, if you need a dual-monitor HDMI KVM and have some patience (and the right parts), you'll very likely be able to get it to work and be pleased with it.The longer story is, out of the box I had a couple of problems and came very close to returning it. The first problem was, one of my monitors was a DVI monitor. I connected it to the KVM using an HDMI-to-DVI cable (not a DVI cable with an adapter). When I switched between computers, the screen would look fine for one second and then turn to colorful static. Both the monitor and the cable worked fine without the KVM, but I tried a different cable anyway. No use, didn't work, same behavior. The second problem was, my PC has two video ports, HDMI and Display Port. The KVM detected the signal from the HDMI port fine, but not the Display Port. Again, I used a cable (HDMI to Display Port) without an adapter that worked fine without the KVM. So, I boxed it back up and requested a return label from Amazon. A couple of days later, before dropping the box off for return, I decided to try again. I bought an HDMI monitor to replace the DVI monitor and then did some research into the Display Port problem. Turns out, I needed an active Display Port adapter with an HDMI cable. The Display Port to HDMI cable I had was passive. (And if you don't know what this means, I didn't either.) A week later, with the new parts in hand, I hooked everything up and it all worked fine. Also worth mentioning, one of the computers hooked up to this is a MacBook with a USB-C to HDMI cable, which works fine, no adapter needed.As for the warts, there are two. The first is, it doesn't come with a power adapter. It comes with a USB to power plug cable, but you need your own USB charger. (I used the one that came with my Roku because that device is plugged directly into the USB port on the TV.) This is a $300 KVM. For that price it should definitely come with a power adapter. The second wart is, it needs to be power cycled about once a week. What happens is, my mouse still works fine, but my keyboard (Redragon wired keyboard) stops working (though, it still draws power and the RGB lights stay on). Luckily, the KVM has a power switch on the back. So, I just need to turn it off, count to ten, and turn it back on. (Of course, the computer thinks the monitors have been unplugged, so all the windows on all the connected computers get moved around and resized.)I'll also mention, my mouse is a wireless Logitech M570, which works perfectly when the receiver is plugged into the mouse port on the KVM. I purchased this KVM to replace an IO Gear single-monitor DVI KVM. Wireless receivers do not work in the mouse port on that KVM, so there's another plus for this one.If you do purchase this and need to attach it to Display Port, here's the adapter that worked for me: https://smile.amazon.com/gp/product/B00S0C7QO8/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1