Edit/Addition:The more I use this device, the more I like it. While this device lacks the video switching of a true KVM (my solution to that is a separate HDMI switch for sharing the video), this hub does appear to handle all my USB switching needs. And to get around the limit of 4 "device" ports, I was able to put a 7 port USB hub (with individual port on/off switches) on one of the device ports of this hub/switch. By using the hubs this way I now have 10 device ports vs the 4 that came with the hub. This is more than enough device ports to make a very useful "docking station" for 4 different "computers" in my home office.FWIW: I am currently using 3 of the "computer" slots on this hub (to a Chromebook, an XBox, and a USB docking cable for my cell phones) and plan to hook up the 4th computer slot to the Raspberry Pi I am in the process of building/configuring. As to devices this hub switches, I currently have hooked up: a keyboard, a mouse, the 7 port hub, a headset, a webcam, a game controller, a USB flash drive, and a USB printer. With all these devices hooked up to any "computer" on this hub, I see this hub as a very useful "docking station" for my devices (with additional free USB ports available for future expansion).-------------------------------------------------------------I got this because I'm about to add a 3rd "computer" to my home office (I've got a raspberry pi on order), and therefore my 2 computer USB switch will no longer do the job. I like this model, because it is rated for USB 3 speeds (whereas a lot of these USB switches are slower USB 2 only), is powered (i.e. has an option to add additional power to the USB hub), and lets you switch 4 USB devices among up to 4 "computers" (whereas a lot of these USB switches only allow for 2 computers). And as an added bonus, any of those "computers" will see an extra USB sound device, that you can send the sound to (i.e. this "hub" even has a built in USB "sound card").I just got this hub today and hooked it up a USB keyboard, a mouse, a web cam, and a USB headset on the device side of this hub. I then had the "computer" side hooked up to my chromebook and my XBox. When I tested on the chromebook (with the hub switched to the chromebook) all 4 devices were seen and function (and I even got a new sound output device on the chromebook, which correctly sent the sound to this hub's sound support). And when I tested it on the XBox, both the keyboard and mouse were seen and functioning (I didn't expect the sound devices to work on the XBox, because the XBox doesn't have drivers for USB sound). So all the tests I could do with my currently equipment were fully functional!Since I have no reason to believe the other two "computer" connections on this hub won't work (it is after all rated for up to 4 computers), I plan to hook this hub up to the raspberry pi I'm getting soon (so the pi will be the 3rd "computer" on this hub). By using the switch this way, I can avoid having redundant USB devices use up the limited space in my home office while still having access to these devices when needed.NOTE: I did run a brief test of plugging a 2nd (unpowered) hub into the device side of this hub, and it seemed to work. Specifically my chromebook still saw and used all 4 of my devices, even though they were now plugged in via a 2nd hub. So it looks like I'll be able to use that option (of daisy chaining USB hubs), should (in the future) I get more USB devices I wish to share between my various "computers".

This particular switch is pretty good. It does everything I needed to do. The only possible complaint that I might have is that, at times, it takes a little longer than instantly to switch between computers, but I have no way of proving that the switch is the problem. Overall, I’m happy!

This switch works well, much better that the one I was using before. The indicator lights are easy to see, the buttons are solid and not glitchy, the case is steel, and it does not switch unless I press a button. It can be powered by an included usb-c cable if needs, but have not needed it.

i connected a USB audio headset though this, and it would disconnect at least momentarily every ~10 minutes, perhaps triggered by tiny motion from a USB cable, and, more alarmingly, sometimes it would put my USB keyboard and mouse, which were not connected through this switch.I replaced it with the unbranded 4x4 USB 3.0 switch sold by Amazon at https://www.amazon.com/dp/B0CZL787W9 (without the built-in USB audio feature, so not exactly identical functionality), which was physically smaller, leaving the cables from this flake eKL USB switch in place, and it has been working reliabiy for the half day I've had it (but it has barely visible button lights and weird wired remote button layout, so I'd roll the dice on still another product if I were to buy another right now).This review is an update to 1 star rating I gave this device when it also caused my USB keyboard and mouse, which were not connected to this switch, to lock up. Since then, I have also observed the problem with the above mentioned replacement product and found that, so far, moving the connection from a USB 3.0 port to a USB 2.0 port seems to have avoided the problem, so it could be a quirk on my motherboard. Also, my computers are set up now with two USB switches, one for audio and one for keyboard + mouse, so I can play music a computer different from the one I am working on. Both USB switches have no external power plugged in, so it is possible that they are just stealing too much power from the USB 3.0 connectors. I may update this review further if I get more observe similar incidents on any of these computes.

I did not expect it to work this well for the price, but it works really well. It comes with all the cables, and even a USB-C cable for power, but it doesn't really need it. I do suggest using another one simply because it's a bit short, but the cable is really good quality. The USB cables to connect to the device though are plenty long and are also great quality.The one issue I've noticed on occasion is that switching to another computer sometimes doesn't get recognized. It's rare, and can always be fixed by just going back and forth once, so I think that's more of a windows glitch.

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As described, it works properly. I had a 2 port switcher before that always disconnected and gave me a lot of problems. After 1 month of use, I absolutely recommend this 4 port 4 PC USB hub.

Switches 4 usb devices between 4 different computers. Works even if it's through hubs, docking stations, and other extensions. Sturdy metal case, comes with 4 usb cables and a power cord. Very happy.

Took a gamble as I wasn't sure if this would work. I have 3 PCs and a PS5 at my desk. I'm constantly switching headsets between stations.I now have my A40 amp connected in to this device with the 4 USB out to the 3 PCs and PS5. It was the PS5 I was most concerned about, but I can now just have 1 headset at my desk connected to all my devices and switch between as needed with the click of a button.I'll connect a couple of other devices as well, but I just needed this for audio and it works!!