TESmart 4 Port HDMI KVM Switch 4K Ultra HD 3840×2160@30Hz | 4×1 KVM Switcher 4 PC 1 Monitor with 2×1.5m KVM Cables Supports USB 2.0 Devices Controls up to 4 Computers/Servers/DVR-Mystic Silve
KVM SWITCH FAQ
Q1: The LED light of the KVM switch is displayed normally, and the keyboard and mouse work normally also. Why the display doesn’t have video output?
A: Please check if the HDMI cable of the input/output is properly connected. The “online†light on the KVM switch indicates the USB connection status.
Q2: The remote control is defective / Why does the remote control not work?
A: Due to the strict review of batteries by international logistics and Amazon, our remote control is not equipped with a battery; please load the CR2025 battery before using the remote control.
Q3: When the mouse touches the edge of the screen during normal movement, it will switch to another computer. This is too sensitive. How to adjust?
A: You can deactivate the quick mouse change mode by clicking on the [Scroll Lock] + [Scroll Lock] + [F12] keyboard.
Q4: What is the length of the cable can I use for the KVM switch?
A: Tips for HDMI cable length:
1.When using 4K@30Hz as an input, it is required that Input HDMI cable <5 meters and the output HDMI cable < 10 meters;
2.When using 1080@60Hz as an input, it is required that Input HDMI cable <10 meters and the output HDMI cable < 15 meters.
Q5: If the mouse doesn’t respond correctly to the command?
A: You can connect your mouse to the USB2.0 port of the KVM switch. (Note: Using this port will not be able to use the mouse to quickly switch modes).
If the problem remains, please insert the mouse into the PC in issue to confirm that it is working properly.
Q6: Why can’t my multimedia keyboard transfer multimedia functions (play, pause, etc.) when using the KVM switch?
A: You can use your multimedia keyboard connecting to the USB2.0 port of the KVM switch. (Note: Since the USB2.0 port does not have USB emulation, the hotkey switching function cannot be used).
Q7: How to change the hotkeys combination?
If your keyboard doesn’t with the [ScrollLock] key or the [ScrollLock] key is used for other functionality, you can take [Right-Ctrl] hotkey
instead of [ScrollLock] key by below way:
Method 1: Execute hotkey command [ScrollLock]+[ScrollLock]+[F1].
Method 2:You can press and hold the “SW” key on the KVM panel for about 10 seconds until you hear a beep, and the way to switch the hotkey will be changed (If it is currently [ScrollLock]+[ScrollLock] + Number, it will be changed to [[Right-Ctrl] + [Right-Ctrl] + Number)
The same if you want to change the hotkey from [Right-Ctrl] to[ScrollLock], you could do as follows:
Method 1:Execute hotkey command: [Right-CtrI]+[Right-CtrI]+[F1].
Method 2:You can press and hold the “SW” key on the KVM panel for about 10 seconds until you hear a beep, and the way to switch the hotkey will be changed (If it is currently [[Right-Ctrl] + [Right-Ctrl] + Number, it will be changed to [ScrollLock]+[ScrollLock] + Number)
 |  |  |  |  |  | |
|---|---|---|---|---|---|---|
| Resolution | 4K@30Hz | 4K@60Hz | 4K@60Hz | 1080P | 4K@30Hz | 4K@60Hz |
| Input x Output | 4 in 1 out | 4 in 1 out | 4 in 1 out | 4 in 1 out | 4 in 1 out | 4 in 1 out |
| Keyboard and Mouse Pass-through | × | × | ✓ | × | × | ✓ |
| Seamless Switch | × | × | × | ✓ | ✓ | × |
| HDR 10 | × | ✓ | ✓ | × | × | ✓ |
| HDCP | HDCP 1.4 | HDCP 2.2 | HDCP 2.2 | HDCP 1.4 | HDCP 1.4 | HDCP 2.2 |
| Dolby Vision | × | ✓ | ✓ | × | × | ✓ |
| Special Function | Multi-view (PAP) Mode | PIP (Picture-in-picture) Mode | ||||
| Material | Aluminum Alloy | Aluminum Alloy | Aluminum Alloy | Aluminum Alloy | Aluminum Alloy | Aluminum Alloy |
| Weight: | 1.12 kg |
| Dimensions: | 32.2 x 23.5 x 8.2 cm; 1.12 Kilograms |
| Brand: | TESmart |
| Colour: | Mytic Silver |
| Batteries Included: | No |
| Manufacture: | TESmart |
| Colour: | Mytic Silver |
| Reference: | HKS0401A30-UKGY |
Got my first unit shortly before the first lockdown (replaced it recently because I stupidly damaged one of the USB ports), and it’s been invaluable whilst working from home ever since.
The build quality is fine for the price, and it worked flawlessly with almost all of my systems. The only issue I encountered was when I tried to pair this up with a Mac Mini, but this was down to the keyboard mapping on the Mac end rather than a problem with the KVM. Provided you’re running Windows or Linux, you should be fine.
The KVM is designed to work with regular keyboards and mice that use single USB connections, so keyboards with separate plugs for controlling the RGB (such as Razer peripherals) aren’t going to work properly.
I did find a solution: all of my Razer equipment (keyboard, mouse, RGB mouse mat and speakers) were plugged into a powered USB hub, then hooked up to the USB port on the KVM nearest the power socket (connecting it to the keyboard USB port disabled the RGB). The only issue with this arrangement was I can’t use the keyboard shortcut to switch inputs, but since the KVM is on my desk it’s actually quicker to tap the input switch on the front of the box instead.
Would I recommend this? Absolutely. You’re not going to get another KVM with 4K support at this price point. Just bear in mind that if you have more than two PCs, you’ll need to buy another two sets of cables as only two are supplied. Also, consider purchasing a powered USB hub to accompany it if you need extra shared peripherals.
First of all, this switch is rather well-built and having the remote control can be very handy for some use cases.
It only has *3* USB ports for peripherals though and 2 of them are reserved for mouse+keyboard. These slots will not work for some peripherals, like a webcam, and need to be used if want the keyboard shortcut/gesture features.
While 1 generic USB port is mostly reasonable, any “unusual” keyboard signals might not work through the dedicated keyboard slot (such as playback/volume controls), which is important if you have media keys, macro keys or a programmable (mechanical/gamer) type of keyboard.
This effectively means that if you have an advanced/unusual keyboard and want to retain its features, you need to use it on the generic slot and basically only have the dedicated mouse+keyboard USB slots for your mouse, that may not work for other kinds of devices.
So, for some cases this switch needs to be coupled with a 3/4 slot USB hub in its generic slot in order to be flexible enough, so be advised. If it had 2-3 generic slots it would have been much better as you wouldn’t need an extra device and extra cables.
I have 2 laptops (work/personal) and a personal desktop and needed a way to connect them all to the same monitor. Using the same wireless keyboard/mouse, without having to swap cables and move the wireless receiver.
This device looks good and easy to setup.
also having the ability to plug a usb hub so all the devices can use the same usb storage when switching between them really helps.
due to wanting to keep a tidy work space I have the device sitting under the desk so having the remote control to switch between (or using keyboard shortcuts) helps as I don’t have to keep reaching under the
the desk to change device.
would recommend.
I bought that to be able to share my keyboard, mouse and screen between my home PC and my work laptop. But just as importantly, I was looking for a KVM which would also support a Webcam so that I could also share that between the two devices. For reasons I won’t go in to here. the keyboard and mouse USB ports on a KVM are dedicated to that purpose. And so to support a webcam you need an extra, generic, USB port. This one had one which was the reason for my purchase.
I’ve installed it all today and it worked perfectly first time. I can effortlessly swap all those peripherals between my two machines.
It’s also a neat bit of kit, it looks tidy on my desktop with all cables fitting to the rear. And it has a simple switching mechanism (and useful indicator lights) between connected devices.
For those reasons I highly recommend this product.
I assume that as the third USB is generic, by simply adding a USB hub you could share other devices at the same time (such as storage media) but I have not tried this.
Highly recommended.
Nice to have 3 laptops & a game console connected to a single (huge) monitor.
Easy to switch between them using the remote or the button on the front.
Only down-side is that i can’t control it through my keyboard
Works great! Would have given a 5 but for price.
Amazon price is very high compared to direct from the manufacturer on eBay. About 90 there & UK stock. I needed the item urgently unfortunately due to a failed KVM. Which is where Amazon Prime comes into it’s own.
Set this up to support three PC and one laptop. One machine is an old 15 year old pc I use for retro gaming. All worked perfectly. Shame the remote does not come with a battery though, but otherwise highly recommended, HDMI HD KVM.
Tried a StarTech before this, that did not work.
Got this one, works straight away, no fiddling about. Thought the unit was plastic from the photos, but it is metal, which is great.
Did not give it full marks because I have a Razer mouse and keyboard, and plugging into the allocated ports did not get recognised with the RGB, although they worked. I plugged a small USB hub into the USB2 port, and then that resolved the problem.
Switching is not as direct as the StarTech because you have to cycle through 1-4. But this is 200 quid cheaper than the StarTech.
Don’t hold your breath even though you are ording this from amazon.co.uk, this thingy is shipped from China.
Easy installation, good manual and works as described.
Changing hot-key on the keyboard started the beep sound on the KVM, had to turn it off. Back on new hotkey worked.
I have Microsoft Sculpt with a small USB key, that I need to insert to the backside of KVM, maybe not optional if keyboard/mouse is too far away.
1 star for easy to connection
1 star for easy switching ( with out using remote)
1 star for sleek and small
2 star for quick delivery
I’m using this brilliant bit of kit to connect 2 laptops and an Xbox One to a single monitor and a powered usb hub with a wireless keyboard and mouse, headset, speakers, webcam, HDD, etc.
The switch means that all of these peripherals can be shared between the laptops and xbox without ever having to swap cables around and I can flip between them by just pressing a single button on the switch.
This is an excellent product and worked straight away with no need to install any drivers or fiddle about with any settings, in fact the only small minus point I can think of is that the usb is usb 2.0 rather than usb 3.0.
It’s a neat little box and I’m using it now – but I did have some problems: it has 3 USB sockets on the back, for keyboard, mouse and any other device but I’ve tried three different keyboards and mice and none of them work in the dedicated ports; I had to use the generic one. The first – a wireless keyboard + mouse (with one USB dongle) -didn’t work too well; the mouse movement became very laggy. It was a horrible keyboard and I was getting fed up putting batteries into the mouse every couple of months anyway, so switching to a wired keyboard and mouse was no hardship – but because I now needed two USB ports I had to plug a USB hub in as well. I don’t think the hot keys are working to switch between machines and I haven’t tried the R/C – but I don’t care; there’s a button on the device to switch and I really don’t need any of them. Video is rock solid (I’m using HD, not 4K), it was one of the cheaper options available and I’m reasonably happy with it all now – but I’ve dropped a star for not working very well with a wireless mouse, and the keyboard/mouse ports not working.
I purchased the 4-Port version of the KVM as I work from home and use two company and two private systems when doing so. This KVM looked like the perfect way to easily move between using all of my systems with having multiple peripherals on the desk. You only get two sets of cables with the 4-port version, so bear this in mind if you don’t have spare USB A-B or HDMI cables lying about. Really easy to set up and using HDMI, I now have my speaks plugged into the headphone out on my monitor. HDMI carries both video and audio, so the speakers play audio from whichever KVM port is in use. This unit has made my life a lot easier and productive, so I could not be happier.
This little guy is really helpful, I have connected 1 Linux laptop, one Mac 2019 and one old MacMini. No complaints, it works except for one little, annoying issue. When you enable the auto switch (SCRLK + SCRLK + F12), which allows you to quicly switch between computers simply swiping the mouse cursor to the right or to the left, my mouse got crazy under bot Mac machines. I was not able to click in the right spot, always picked up somewhere below the point i was aiming to, making quite impossible to work with my Macs. I switched mice but same issue, wired, wireless, no luck. Once switched off the auto switch mode, everything went back to normal. Not a big issue to me, I never use the auto switch, just be aware of this issue.
Great for swapping easily between devices to share the 40″ screen that I use. One small frustration with having the keyboard plugged into it is that the Sleep and Wake-Up buttons no longer work on the keyboard, so have to use the Windows function or power button on base unit of PC.
Very impressed with this. I bought this (Oct 2019) to replace a Belkin Flip VGA KVM, as my home setup had changed and no matter what I did, I couldn’t get the Flip to work successfully. No such issues with the TESmart 2×1 HDMI KVM Switch HDMI 4K 3840×2160@60Hz 4:4:4 with 2 Pcs 5ft KVM Cables Supports USB 2.0 (putting this here as Amazon seems to mix up reviews with other devices).
My set up has become slightly complex:
Late 2011 MacBook Pro (13″) with a Mini Thuderbolt connection (converting to VGA for the Flip worked fine).
Dell Latitude 5490 connected to a Dell D6000 Docking station. (This never worked with the Flip, no matter whether I used Display Ports of HDMI (converted to VGA); the dock always defaulted to 640×480 without any options; Displayport were unable to help).
Fujitsu L22W-7SD (ancient VGA/DVI) Monitor
Logitech K800 Kbd and MXMaster 2S mouse, both via a single USB dongle.
Despite a variety of adaptors, alternative cables etc., there was no way my Flip KVM could give me the functionality I wanted.
I also operate my setup within a purpose built but restrictive cabinet, meaning that I wanted to hide the KVM away and have a remote control to switch outputs, limiting my options.
The TESmart arrived on time, I provided the required battery to the little IR Remote, plugged all the cables in (using many that I had used with the Flin unsuccessfully) and hey presto! Everything has worked faultlessly ever since.
Day 3 of using the TESmart and I haven’t a single complaint. Well, I can’t get the hot key switching to work (yet), but they may be down to the type of keyboard I am using.
Very happy customer. Well worth spending the tiny premium to buy a decent KVM that ‘just works’!
Update: have added keyboard switching instructions from the manual as someone was asking how it is done (and the manufacturer doesn’t make the user guide available for download on their site)
2nd Update: I’ve added a further grab of hotkey instructions for the questioner asking how to turn off buzzer in the absence of a [ScrollLock] key.
Works well. Had to contact support to fix an issue, but they were responsive and it turned out not to be a problem with the KVM. Feels reasonably well made and the keyboard switching works fine.
I had a pretty unusual use case for this I guess – Mac mini, Work windows laptop which is completely locked down and XBOX One X on my desk, connected to a 4k monitor.
I needed something so that I could share the one keyboard and mouse, but I needed a remote as I couldn’t rely on software for hotkeys and had to have the KVM tucked away in a corner out of sight.
And it’s proved to be outstanding – no image quality degradation and it just works, flawlessly, week in week out.
One thing to note – it supports 4k and HDR signals without issue, but I couldn’t get it to work with Freesync. To be honest, that’s not really caused me any issues, but worth pointing out.
Great performance and value – I’d highly recommend.
Works well enough except that with a wireless mouse the pointer is laggy and it feels like it is attached by an elastic band. When I changed to a wired mouse that was perfect.
A really nice little feature is that you can turn off the beep it makes when changing display.
I haven’t tried the remote control as mine arrived without a battery. It did have the little plastic tab that you pull out before use and is supposed to stop the battery from getting discharged until the plastic is removed. To me this doesn’t matter as the KVM is on my desk next to my monitor and keyboard.
The blue LEDs on the front are not too annoying as long as they are not near eye level. If you have the KVM on a shelf above your desk they could be a real irritation. I personally feel that blue is a terrible colour for LEDs in most applications and that they are nearly always to bright.
The KVM comes supplied with two sets of cables – as per the photo. Normal HDMI and USB cables can be used rather than buying device specific cables.
Arriving in a nice compact box, the TESmart KVM switch is a good-looking compact unit with a nice array of ports on the back and a nicely laid-out front with informative pretty blue led’s indicating ‘Online’ and ‘Selected’ status, a port ‘Select’ button and a stereo audio output.
Included are the wall-wart power pack, infra-red remote and a pair of perfectly acceptable composite HDMI/USB cables (the latter USB-A at one end and USB-B at the other).
The unit was tested with Dell and HP 2K displays and a Dell U2515H 2560×1440 display, switching between a MacBook Pro (2018 model) and a Dell Latitude 5290 (the latter both with and without a Dell USB-C dock), an Apple wired keyboard and a Logitech G700s wireless mouse with dongle.
In use the unit performed quite well with a couple of provisos. The MacBook Pro is USB-C only and has no HDMI output so was tested with an economy USB-C to HDMI/USB/CF/SD adapter, a Lenovo composite USB-C adapter with ethernet support and finally Apple’s own USB-C to HDMI/USB adapter. With the other adapters occasionally producing a screen full of snow on switching the best results by far were with Apple’s own adapter. Being a fan of Apple products I also use an Apple keyboard and discovered that the ‘official’ keyboard port does not recognise Apple keyboards but when plugged in to the auxiliary USB port the keyboard works and switches perfectly. The penalty is that the ability to switch ports via the keyboard is lost. This is where the remote control comes in to it’s own as using it you don’t have to reach across the desk to push the ‘Select’ button. The lack of an included battery isn’t a big issue (it’s a common low-cost type) but could be mildly annoying when setting up if you need the remote and don’t have one to hand. Fortunately, I did have one!
The mouse performed flawlessly with the dongle plugged into the mouse port on the switch with no apparent lag even at the higher resolution and reporting settings of which the G700s is capable.
I should comment on the very loud beep the unit makes when switched on and switching ports as it has been noted in a few reviews and was a concern to me when considering the TESmart as I intended to use it in an open office. This is not, repeat NOT an issue. A couple of keystrokes involving a function key and the beep is disabled. If you have an Apple keyboard you will need to borrow an ordinary PC keyboard temporarily. Once off, the beep-on-switch will remain off apart from a brief beep when the unit is switched on. RTFM, folks!
Remaining untested are the audio outputs and the ‘fast switching’ which flips the ports when the mouse points gets to the edge of the screen. I had no need of the former and found the latter to be a mixed blessing however for my purposes neither detract from the usability of this kVM.
In summary, I am pleased to have purchased this KVM and it has been an absolute boon in my daily use as a Data Migration specialist where a couple of laptops and several screens are a must. My desk is far tidier as a result.
Pros
Good robust unit, sits well on desk.
Cables fit for purpose.
Remote control more useful than it looks.
Good stable image quality.
Switch speed good.
Does what it is supposed to.
Cons
Short PSU cable (only about 1 metre).
Loud beep on switching (BUT see text).
Limited Apple Keyboard support.
No battery included for the remote.
The usual disclaimer: I have no affiliation with the seller and have received no remuneration for this review. I am a satisfied customer who is pleased with the product and very pleased with the responsiveness and help from the seller’s support team when I have had need of it.
The grey 4-port version I got looked really good from the front with a power switch on the right and eight blue LEDs showing which port is active and powered. A yellow selector button in the middle cycles through the ports.
On the rear there are four HDMI sockets and four USB-B (printer style) sockets for each computer and an HDMI socket for the monitor. Two stacked USB-A sockets for keyboard & mouse plus an extra USB-A socket for another shared device. A 2.1mm barrel socket is for the supplied 5v power module.
My 27-inch DGM monitor is 2560×1440 and shows crystal sharp pictures from an attached Windows PC and Raspberry Pi though the KVM. I have a cheap wireless keyboard and mouse and both work fine with the dongle fitted to the KVM.
A memory stick plugged in the extra socket can be used by all connected computers (data format permitting of course)
One problem is with a memory stick plugged in the extra socket on the KVM – it will show up on every PC *only while that PC is selected* but is simply disconnected when a different port is selected. This can confuse each PC trying to share the memory stick. Toggling to a different port and back again causes a fault on each computer showing as the memory stick was disconnected without safe removal which defeats the purpose of “sharing” it between several working computers and switching between them.
The KVM doesn’t have a flat top surface so you cannot balance a monitor on top of it but it is quite heavy with slightly “sticky” feet preventing it tipping with the generally heavier HDMI cables.
Only two USB+HDMI leads are supplied in the box but since they are standard “USB printer” and “HDMI” cables albeit stuck together extra normal leads work well and are easy to acquire – and cheap if you don’t try to purchase KVM-specific leads.
I got a special deal 110 with lightning deal discount and 40 voucher reducing to a mere 45 – well worth it for that price. Would recommend.
I’m using the gadget to switch only two devices at the moment, one is a CCTV system and the other a Windows 10 machine that runs as a media server (streaming to other devices rather than showing any media itself) – despite being warned the use of a wireless keyboard was unlikely to work, I do just that and it seems fine (CCTV only uses mouse part though). I’m happy with the device, I can’t really comment on image quality as I’m running into a cheap monitor and I don’t look at it often, it’s just handy to have now and then and it seems reliable. My only gripe is the inclusion of only two cables for a four input device.
Good points:
– Well built. Sturdy metal construction and I like the red top!
– Comes with remote to switch inputs.
– Small and light. Much smaller than I expected.
– Fast switching (sometimes, see below).
Not So Good:
– If you stay on one connection too long (over an hour) and then switch to the other connection it takes 1-2 seconds for the keyboard to become active.
– Light. As it so light it moves easily even when you shift the cables slightly.
– My Mac Pro won’t boot (gets stuck on the white screen) if I reboot with the KVM connected. I need to disconnect the cable to the Mac and reconnect when it has booted up.
– Annoying blue lights!
Anyway, I searched around for a replacement and found this one. I works straight out of the box. The only slight downside is that it needs to be plugged into a PSU for power, my previous KVM could be powered by one of the USB ports OR PSU.
Im not working with 4k, but with a LG ultrawide monitor, but all is good with the PCs interacting with the monitor, and during switching.
Very happy with the product.
I’m using a logitech k360 keyboard and Anker mouse….all worked well out of the box. I don’t use and fancy features….all I wanted was a quick and simple way to use my 1 keyboard and 1 mouse to control 4 PCs and this does to job.
If it breaks I’ll report back but so far seems to be working well. Only moan is I’ve had to buy 2 additional USB/HDMI cables as the 4 way box only comes with 2…..why on earth they do that is beyond me…..just adds that little bit of annoyance!
The one catch with all these kvms is how well they work with cordless mice and keyboards – especially the logitech unifying series. Having multiple machines with one keyboard is really helpful, but what often comes along with multiple machines, it multiple wires, so keeping this to the minimum is really helpful.
Two cautions with this unit:
1. If you use the unifying receiver in one of the the KVM USB KEYBOARD/MOUSE socket, you lose access to any special programming buttons you may have setup with the logitech software.
2. If you use the unifying receiver in the generic USB socket you lose access to the ability to switch screens using scroll lock (though the special buttons above work).
Good news is there’s a workaround that gives you the best of both.
1. Plug in one unifying receiver to one of the keyboard/mouse sockets. Ensure the keyboard is paired to this unifying receiver.
2. Plug in a second unifying receiver to the USB socket (ideally using a USB hub then you get the benefits of all the other ports!) and pair the mouse to this receiver. You’ll probably need to make sure you’re doing this via the advanced unifying app to make sure you’re connecting to the right dongle.
Once you’ve done this, you’ll still lose access to the media keys on the keyboard, but this might be easier to live with than losing access to the ability to switch screens using the keyboard, but any shortcuts you might have assigned to the mouse (for me it’s using the left/right scroll to move a window nicely to the left/right of the screen) once again work.
Logitech make great stuff, and I really didn’t want to lose access to my cordless kit, and with this you don’t need to.
Overall, I recommend this unit, it’s a bit of a suck it and see device since use cases are often very specific, but this has been a pleasing experience.
Recommended!
The TESmart is a bargain. It really does support 4K at 60Hz. At first I was only getting 30Hz over HDMI 2.0, but then realised that my LG monitor needed the “HDMI ULTRA HD Deep Color” to be enabled for 60Hz to work. I’m using Plugable DisplayPort to HDMI 2.0 adapters since both my machines only support HDMI 1.4. Make sure that your DisplayPort outputs support 4K60 if you are going down this route.
I have a simple Cherry G80-3000 keyboard, which I have plugged into the keyboard port so that hotkey switching works. This uses the Scroll Lock key, by pressing it twice in quick succession and then typing the number key for the input you want to switch it. You can still use the scroll lock key normally by pressing it once; there is just a slight delay whilst it waits to detect if it’s been pressed twice. I haven’t noticed any issues with dropped/bouncing/delayed keys.
I have a Roccat Kone mouse, which I have plugged into the USB “hub” port on the KVM, due to the additional programmable buttons. I had frequent issues switching, where after switching to a different input, the mouse would no longer be detected by either system, and required either the KVM be power cycled, or the mouse unplugging and reconnecting. I solved this by connecting a USB hub in between the KVM and the mouse, and now it works perfectly.
The beeping on switching is quite loud. It’s possible to turn this off, at least for keyboard hotkey switching, which I have done.
The KVM can also extract PCM audio from the HDMI signal, which it then sends to a 3.5mm line output.
Finally, this KVM runs nice and cool. I haven’t had chance to measure power consumption yet.
I had only partial success with a Displayport one because every time I switched, it did exactly that; switched off the monitor as far as the PC was concerned so that the PC moved all my windows back to another screen.
I’m pleased to say that this one really works like KVMs of old and maintains all windows where they’re meant to be while switching.
However, I did have an issue with my keyboard. My gaming keyboard has additional programmable features and it failed to input text properly when plugged into the intended USB port. It worked fine on the additional USB 2.0 port but this prevents the hot key functions from being available. In this instance you have to use the supplied IR remote or main Select button to switch inputs.
Changing to a standard Microsoft keyboard solved the problem, except that the volume, pause/play, and calculator keys don’t work. Again, moving the keyboard USB plug to the standard USB 2.0 socket from the intended keyboard USB socket allows these special key functions to be used.
If it wasn’t for this small keyboard issue (probably familiar to users of earlier KVMs with hot keys), I’d give this 5 stars. 4.5 out of 5 for me.