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GREATHTEK HDMI KVM Switch 4 Computers - 4 IN 1 OUT
HDMI KVM Switch 4 Ports supports 4 computers to share 1 monitor and 4 USB devices, and is controlled by 1 set of keyboard and mouse. You can switch between 4 computers at any time. It is very suitable for people with multiple computers, which saves your space and improves your office efficiency.
Micah
Reviewed in the United States on February 4, 2025
It's simple and works perfect, I can quickly switch between my laptop dock, tower PC and video server. It's great for cleaning up my desk and no more swapping the USB dongle between machines for the keyboard. Simple upgrade, definitely worth it. I waited a few months to make sure it was reliable and it's been flawless for what I need. Highly recommended!
Greg Gerardot
Reviewed in the United States on February 16, 2025
High quality switch. Able to have a very complicated setup with Xbox, laptop hdmi, and a nintendo switch all going through it with seamless transitions or issues. The provided chords are short but do the job well. Slight delay when changing from one to another, but that is normal.
WufPup
Reviewed in the United States on February 12, 2025
Good quality product and performs exactly as described.A few small design tweaks would make this a 5-star product:1. Change button lighting to indicate which computers are powered up, not just the "active" one2. Add a 3.5mm audio output jack3. Add a wireless remote-control switch3. Provide a longer USB A to C power cable
turkey
Reviewed in the United States on January 27, 2025
This is a well constructed device that uses metal construction. It works exactly as I wanted. I do not see any difference in resolution with or without this switch. Setup was easy and intuitive. If you are looking to share a keyboard an mouse with multiple devices easily, this is the ticket. The ability to plug in a usb thumbdrive and automatically share between devices, was a nice surprise.
Michael Coffin
Reviewed in the United States on July 31, 2024
For the price, you simply can't beat this KVM! It has a nice compact footprint, is super-quiet (no cooling fans, etc.), transitions from session to session smoothly with little lag and uses standard USB and HDMI cables (no proprietary KVM cables needed).My main complaint is when switching from host to host the USB devices are connected/disconnected - this causes the sound for "USB Device Disconnected" to be played on the machine you are transitioning from, and "USB Device Reconnected" to be played on the machine you are transitioning to. Of course this is SUPER annoying, but you can turn off these sounds in the Themes on each of the machines connected to the KVM (unfortunately this will apply to ALL USB Connect/Disconnect actions not just those on the KVM). The sounds can be dealt with, but because of the way the KVM manages these devices you're going to see a LOT of USB Device Disconnect/Reconnect messages in your hardware audit log, and of course this introduces a slight lag when transitioning from session to session. My prior KVM (a Belkin F1DP116G) kept signal to the keyboard and mouse on each host machine active (whether USB or PS/2) so this was not a problem - if this KVM could do something similar it would be a HUGE improvement!Gripe #2 is the location of the 3 USB ports, they are all in the front of the unit. Meanwhile all OTHER cables connect in the back. I think it's great to have USB ports in the front for things you might want to plug in and take out (like a thumbdrive), but could you put at least two or three in the BACK so we can connect the keyboard and mouse (and maybe one other permanent device) in the back and not have their cables visible on the front of the unit?Lastly, the unit is powered by a USB-C cable to an AC power adapter. I have this plugged into a power distribution switch on the same circuit as my monitors. At the end of the day I flip the switch to turn off this circuit to power down my monitors and KVM switch - but the KVM still has power! It must be drawing power from the USB cable to one of the hosts (that is up and running 24/7)! It would be helpful if the KVM would power down when the power supply to it via the USB-C cable is terminated.Bottom line: Great value for the price, seems efficient and reliable - but with room for improvement.
Retired Geek
Reviewed in the United States on February 6, 2024
I have three computers: An older Win 10 (my primary machine), an older Fedora Linux, and a newer Win 11 Laptop. I *can* sort of switch between them to do most of what I want do using Cygwin from the Windows machine and ssh to create remotely and I already had a 2-way KVM. The 4-way switch now allows me to also access the laptop with a real keyboard and a much larger screen. I don't use the last port, but it does work properly.I used the extra (for me) HDMI cable to attach the switch to the monitor (bundling the wire) and can't find the the extra USB cable now. (I wanted to measure its exact length.)My older Win 10 uses a graphics card that doesn't have HDMI output, so I needed to get a DVI to HDMI dongle. While waiting for it to arrive, I used the Fedora as the primary. This worked out mostly OK, but not completely. When the dongle arrived I shut down the Win 10 machine, connected the monitor via the dongle, and restarted it. This sort of worked for a short time. The monitor was OK, but windows wasn't happy with the keyboard/mouse. These have a wireless connection plugged into the KVM. The mouse was erratic and would stop. Win 10 eventually complained too, and completely disconnected the USB port. I switched the connection over to port 4 and Windows complained that it couldn't handle it. I suspected that there might be a cable problem, but tried rebooting the Windows machine first. Voila, it started with no mouse/keyboard problem. I hot switched it back to port 1 with no problem. The new switch remained on during all this time. Maybe the Windows problem was due to having the keyboard and mouse connected (but unused) and not the video. I don't know, but there's no problem now, except:The cables are about six feet long, but that's a bit too short for one machine. I'd like the switch to be about an inch or two closer to the front of the desk. Now I have to reach under the monitor to switch. By the way, you *need* to attach the little plastic feet that come with the switch package to the bottom to keep it from sliding on your desk.The picture in the add shows the front and back side of the switch. It should just show the front side and the back side as an alternate picture. The switch is one box, roughly 8" wide x 3" deep x 1 1/8" high (with the feet.) The USB ports switch along with everything else so this is really a KVMU switch, obviously the U for USB.I like the switch, otherwise I wouldn't have spent an inordinate amount of time writing this review. It switches pretty quickly, less than 2 seconds. This is hard to measure exactly because it also takes some time for the OS to respond. I have to hold the switch when pressing the button to keep it from sliding, but I'm not switching often enough for that to be a real problem for me.
Biboo
Reviewed in France on February 21, 2023
Que ce soit pour du télétravail, geek ce genre de produit est excellent vous pouvez brancher consoles, pc lecteur/blueray/DVD et tout contrôler avec un clavier / souris ( quand le device le permet ( console pc etc..) vraiment un gain de temps et de place
ShatAudio
Reviewed in Italy on January 16, 2023
4 pc collegati senza nessun problema, pensavo di dover usare l'alimentazione esterna invece, anche senza funziona egregiamente, nelle porte ho inserito i ricevitori per tastiera e mouse wireless, la stampante e un disco rigido comune, tutto funziona perfettamente e scambia in pochi istanti. il monitor è wide sreen, pensavo avrebbe avuto problemi invece manco un piega e la visualizzazione è perfetta, mi sono premurato di acquistare i cavi più corti e buoni possibili per collegare la periferica ai pc e tutti gli hdmi 8 k.funziona tutto a meraviglia, indi consigliatissimo, per chi ha avuto problemi consiglio di usare connessioni corte e di qualità non cose da pochi euri, non pretendete che una ferrari faccia i trecento se fate la pipì nel serbatoio
Kai Down
Reviewed in the United Kingdom on November 29, 2022
I've been through a few different KVM switches to hopefully try and find one to run three different computers into one monitor in an audio software testing setup. The other KVMs I tried did not provide enough power to the USB port to power my audio interface (SSL2+) stably. This GREATHTEK one works perfectly - switching is super fast, it's nice and small and lightweight, setup was super easy. Super happy with this! Only critique I have is that I would've liked to have seen half the USB ports rear-facing - as you can see in the picture, I've had to loop the USB under the unit which can be quite messy. The provided cables were also a little too short, so now I've got 8 unusable cables in my house going spare.
Sandy
Reviewed in Spain on June 12, 2021
En comparación con un viejo KVM VGA(RGB analógico) al que sustituye, las mejoras saltan a la vista. Una mayor capacidad de resolución para soportar el cambio de monitores al que está destinado , (aunque los conectores son HDMI 1.4 soporta la transmisión HDMI 2.0 de alta resolución).Los diodos led excelentes y muy bien posicionados estéticamente. El Hub para 4 dispositivos USB tiene un pequeño inconveniente como que debería tener 2 entradas B de conexión en la parte frontal para compartir dispositivos Usb, (como pendrives etc.), y las otros dos para el teclado y el ratón detrás, formando parte del cortejo de conexión REAR de los conectores A y HDMI.Los cables suministrados no tienen una longitud excesiva pero son de calidad.No haría falta alimentarlo a 5v. pero yo utilizo el cable de alimentación suministrado para introducirlo en una ranura usb y así alimentarlo desde el PC ya que no trae fuente de alimentación.Por lo demás muy bien. Excelente relación calidad precio, Lo recomiendo para utilizar cuatro ordenadores a la vez con un único teclado y ratón y añadir la posibilidad de extender tus escritorios o pantallas para los 4.
Djé Bye
Reviewed in the Netherlands on November 12, 2021
I tried and send back a few HDMI KVM switchs claiming to support 4K but unable to handle 1920x1200 resolution (16/10 format so appreciated for photo editing).This KVM does it very well. Then, the only missing feature is the remote control meaning the box is to be located on the desk to be accessible.Apart from this, this is a nice device.
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