Rybozen KVM Switch 4 Computers, 4K USB KVM Switches 4 in 1 Out for 4 PCs Share One HD Monitor and 4 USB Devices Keyboard Mouse Printer, with 4 USB Cables & HDMI Cables, Individual Button Swapping

This really works well for a KVM switch. It has a lot of ports on the front to share different USB devices to the computers.It uses standard HDMI cables and USB A/B cables. I am glad for that. The cables that they give you are VERY SHORT. I would plan on buying longer HDMI and USB A/B cables. I had the HDMI cables already but needed to buy some 10 foot USB A/B cables.When you switch from one computer to another seems pretty quick.I don't like the blinking light on the front to tell you which input you are on. It looks weird. Minor but just odd.The other thing is having all the USB cords on back .. makes it hard to do anything with it (you can't butt it up against a wall). I am going to build a shelf with space to route the cables behind it.

I was hopeful for something more substantial and feature rich, but it does what it claims to do.For starters the box comes with all the cables needed to get it working. That's a plus. Now, the cables aren't super long, so I am using several of my own from my cable closet. The KVM switch is super lightweight. There is not enough substance to hold it in place while using it. I solved this with double-sided sticky pads. So now it is permanently attached to my desk.Another challenge is if your office is dark (as mine is) you cannot see the buttons to switch between systems. You kind of have to feel for them.I'd really appreciate it if there was a keyboard shortcust like with most KVM switches, e.g. a "tap-tap" on the Esc or Tab key to switch systems.All that said, the box does work. I'm driving a Windows 10, Linux Mint, Raspberry Pi, and a DOS box. It works well. There was only one glitch where the Windows machine got confused and the solution was to reboot the DOS box. Not sure what happened there but it's never happened again.Not a feature rich KVM, but for the money, it works just fine.

This review is for the 4 PC, KVM switch with HDMI inputs/output.First off, the price is right.Seems to work fine. Had some static on HDMI output, Included HDMI cables might not be super well shielded but it's working OK now.Cable mgmt is pretty awkward on a desk, since you have cables coming both out of the back and the front, while the 4 PC switching buttons are on the front. Kind of makes the desk messy with cables streaming out of the front. I place it on top of one of my desktop towers under the desk, sideways, to mitigate this issue.

This was delivered on May 27, 2023, and my hubby put it to use immediately. As of August 26th, 2023, the unit is having trouble. Here's what he says:Unit showing intermittent failure to output signal and failure to pass device info back to computer.I am using the HDMI and USB cables which came with it for input, and using an HDMI to DVI cable to output to a monitor with DVI and VGA input. The DVI to HDMI cable and monitor work perfectly when not going through the KVM switch.Unit began having issues a few days ago with my OS at times no longer recognizing the available resolutions for the monitor (generally in the middle of use), though it would sometimes resolve with a reboot, power cycling the monitor, or disconnecting and reconnecting everything from the KVM.Now, it has added no output signal to its repertoire of intermittent issues, and the issues are more persistent.When it has these episodes, I can plug the monitor directly into any device and it seems to work flawlessly, but back into the KVM and the episodes persist for a few minutes to dozens of minutes. Possibly more - sometimes I'm turning everything off and going to do something else hoping it will behave when I come back. More frustrating than just dead!As of now, all evidence is pointing to the KVM or the cables which came with it, and seems to exonerate everything else. If new evidence points to a different culprit, or exonerates the KVM, I'll have my wife update the review. Other than possibly receiving a dud, the unit is compact, passes full HD video, runs off usb, and is very affordable (hence 2 rather than 1 star).

1. I don't believe in ratings, so I don't write reviews. 1 Stars = Something went wrong, and company couldn't care less. 3 Stars = Product delivered on-time, without defects. (They did their job correctly & as promised.) 5 Stars = Company exceeded all expectations when something went wrong and made it right.Why give 5 Star rating for just doing your job?2. Company offers 3-year warranty if review is written.3. This product is to be installed into my system that is NOT currently connected.4. My system has 4 PC's 2 Game consoles, 9 Displays and uses 62 devices with 169 wires that interconnect while being mounted in desk that has 2 8U rack pods on either end which is disassembled currently because I'm installing 5-inch casters and 3 LED lighting systems.5. I have not yet had the opportunity to plug this unit in to my system and probably won't for a few more days. (After the warranty extension window expires).6. Product was delivered on-time, is powered passively, (which I like), and will fit into the place I have planned to install it.7. I have purchased two other products from this company and it's parent company. They are both functioning properly after over a year. This is a shock because it seems that most things made by ANY electronics, software, or computer company in the last 20 years has a 6-18 month life span before they fail (which I believe is intentional).SO, I'll amend this review after I've installed it and had it working for at least 6-months before.