The first noticeable thing about this KVM switch out of the (plain white) box is that the overall build quality is excellent for the price range. The unit feels solid, all ports are firmly mounted and cables connect and disconnect cleanly.

The supplied cable lengths (pulled reasonably straight and excluding connectors and power brick) are:

USB cable 56", DP cable 66", power cable 57"

The setup process was easy, but does require some room for arranging all the cables. The KVM case has some weight to it which helps it stay in place, ventilation cutouts for air flow via the base, and 4 rubber-like feet to raise it slightly, assist air flow and avoid damage to a desk or surface.

Everything tested so far has performed well. For the most part it is connected to 2 Dell laptops running Windows 11 Pro, and a third Dell or HP running Fedora or Ubuntu depending on needs at the time. Window resolution and layout retention has been flawless, switching is quick - mostly using the remote or the switches. 4k resolution is working perfectly. Adding and removing portable USB drives has worked with no issues. Mouse and keyboard are currently Logitech and work exactly as expected. Although currently using three computers in this setup, all four connections have been tested and no faults found on any ports. Put simply, it just works.

After using the switch for two weeks solidly, in use every day, it has been trouble free since setup. I'll update the review if unexpected problems arise, however judging from the overall build quality durability should be good - nothing is flimsy or loose. For a four computer setup or for future expansion, this switch is currently proving itself to be very good value and worth serious consideration.

I’ve gone through quite a few KVM switches over the years, and the TESMERT 4K@144Hz DisplayPort 1.4 KVM is one of the few that actually delivers what it promises—especially if you’re running high-end monitors and multiple systems.

The standout feature is the ability to handle true 4K at 144Hz over DisplayPort 1.4. That’s where most KVMs fall apart, either limiting refresh rates or introducing flicker and signal instability. This one holds a stable connection with no noticeable degradation in image quality. If you’re used to 4K@60 KVMs, the jump in smoothness is immediately noticeable, particularly for gaming or any kind of motion-heavy work.

Switching between four computers is straightforward and reliable. Whether using the front panel or keyboard hotkeys, transitions are quick with minimal delay. You don’t get the long black screens or renegotiation issues that are common with cheaper switches. It feels responsive enough that you can move between systems without breaking your workflow.

USB performance is also solid. Keyboard and mouse inputs feel immediate with no lag, and connected peripherals stay consistently recognized. That’s a big deal because many KVMs handle video fine but struggle with USB stability—this one doesn’t seem to have that issue.

Build quality is better than expected. It has a more professional, durable feel rather than the lightweight plastic you see in lower-end units. Ports are snug, connections feel secure, and once everything is set up, it just stays stable.

Another major advantage is proper EDID handling. This keeps your display settings consistent across all machines, so you don’t deal with windows resizing, resolution drops, or monitors disconnecting every time you switch inputs. If you’ve used a KVM without good EDID management, you’ll appreciate how much smoother this makes daily use.

There are a couple of things to be aware of. Setup can get cable-heavy since you’re connecting up to four systems, and to fully take advantage of 4K@144Hz you’ll need high-quality DisplayPort cables across the board. It’s also priced higher than basic KVMs, but that’s expected given the bandwidth and reliability it offers.

Overall, this is a high-performance KVM built for people who actually need it—multi-system users, developers, IT setups, or anyone running a high-refresh 4K display. Once it’s installed, it’s extremely consistent and eliminates a lot of the friction that comes with managing multiple computers. Made well, good quality materials - recommend - good value!

I evaluated the TESMERT DisplayPort KVM switch designed for connecting four computers to a single monitor. The unit has a solid metal housing with a smooth matte finish and a compact rectangular shape. The DisplayPort and USB ports are aligned cleanly on the rear panel, and each port is labeled clearly. The front buttons have a firm, tactile click and respond consistently when pressed. The included DisplayPort cables appear well‑made, with snug‑fitting connectors and strain‑relief ends. The power adapter connects securely, and the indicator lights on the front panel illuminate clearly to show the active input. The bottom of the unit has rubber pads that keep it stable on a desk without sliding.

Switching between systems is immediate from the button panel, and the device maintains a stable signal to the monitor during transitions. The unit supports high‑resolution output as labeled, and the DisplayPort connection remains steady without flicker during use. USB peripherals such as keyboard and mouse transfer cleanly between systems when switching. Overall, the device has a sturdy build, clear labeling, and reliable switching behavior suitable for multi‑computer desk setups.

High-Res KVM for Smooth Multi-PC Setup

I received this DisplayPort KVM switch and it has completely cleaned up my desk by letting four different computers share one monitor, keyboard, and mouse without any hassle. The 4K at 144Hz support looks sharp and feels super responsive whether I'm working or gaming, and everything switches over quickly with the hotkeys or remote. No drivers needed, just plug in the cables and it works right away with Windows and everything else I tried.

The build feels solid with metal housing, and the extra USB port is handy for a scanner or extra drive. Daisy chaining and HDR worked great too, plus the auto scan mode is nice when I want it to cycle through systems on its own. Hot-swapping devices without restarting is a real time-saver during busy days.

Switching is instant with zero lag on the keyboard and mouse, making it feel like everything is directly connected. It's been reliable so far and makes multitasking across machines way easier. 👍🖥️

I've had this running for several weeks with four DisplayPort desktops, and it hasn't missed a beat. Video stays stable, USB devices reconnect quickly, and I appreciate having multiple switching options depending on what I'm doing. It's one of those products you install once and then forget because it just works.

I use the same monitor for gaming and work, so keeping 144Hz was a must. This KVM delivered exactly what I wanted. My keyboard, mouse, and USB headset all switch over without any hassle, and the hotkeys make moving between systems really easy. Everything feels responsive. Even though I only connected two computers...

This has been a great addition to my workstation. I switch between development machines all day, and the EDID feature keeps my monitor settings intact, so I don't have to deal with windows getting rearranged every time. Setup was simple, and it's been rock solid ever since.

I almost bought a much more expensive KVM, and I'm glad I gave this one a shot first. It handles my 4K 144Hz monitor without any issues, and switching between four PCs is quick and seamless. Honestly, it performs like a premium product while costing much less. Incredible value for the money.

I honestly wasn't expecting much at this price, but this thing completely exceeded my expectations. Finding a reliable DisplayPort 1.4 KVM with true 4K 144Hz support usually means spending a lot more. My monitor runs at full refresh rate, switching is smooth, and I haven't seen any flickering or signal drops. Definitely one of the best tech purchases I've made this year.

As a director and editor working across multiple systems, a reliable KVM switch can dramatically improve workflow efficiency by eliminating constant cable swapping and monitor reconfiguration. This TESMERT DisplayPort KVM switch is clearly designed for high-performance multi-computer setups, especially for users working with high refresh rate displays, creative applications, gaming systems, or professional workstation environments.

One of the standout features is the ability to maintain true 4K at 144Hz over DisplayPort 1.4 while preserving smooth switching and stable monitor behavior. The EDID emulation is especially valuable because it helps prevent screen rearranging, resolution resets, and display disconnect issues that are common with lower-end KVM switches. The multiple switching methods, including hotkeys, remote control, front-panel buttons, and auto-switching, also make daily operation much more flexible depending on the workspace setup.

Pros
• Supports true 4K@144Hz performance with smooth stable signal handling
• EDID emulation helps preserve monitor layouts and resolution settings
• Multiple switching methods improve workflow flexibility and convenience
• Solid metal construction and included cables create a more premium setup experience

Cons
• Large multi-system setups can become cable-heavy during installation
• Premium performance features come at a higher price than basic KVM switches
• USB configuration may require some adjustment for advanced peripherals

The pass-through keyboard and mouse support works especially well for gaming peripherals and productivity devices where latency or compatibility issues can become frustrating. For creators, developers, streamers, IT environments, or users balancing multiple computers on a single desk, this type of setup can significantly streamline workspace organization and day-to-day workflow efficiency.

Final Thoughts
This TESMERT DisplayPort KVM switch delivers an impressive combination of high-refresh video performance, reliable switching stability, strong build quality, and professional-grade workflow functionality. The support for 4K@144Hz, EDID emulation, HDR compatibility, multiple switching options, and responsive USB passthrough help it stand out from many lower-end KVM solutions that struggle with stability or signal consistency. For power users managing multiple systems who want a smoother, cleaner, and more efficient desktop setup without sacrificing display performance, this offers excellent overall value.

I've been really happy with this KVM since installing it about 3 weeks ago. It works seamlessly--mostly just plug and play. I currently have three compute devices connected to it and use it to bounce between them when working or playing games or whatever else so that I don't have to have extra monitors for each and can consolidate into just a few. The unit has some heft to it, which prevents it from moving around much when running cables or if stuff bumps it. It's easy to alternate between devices with multiple options for doing so and I've noticed no degradation of video quality or any type of input latency from my mouse/keyboard. The price point is fair for the quality of product you're receiving. You can definitely find cheaper if input lag or video quality isn't as important for you, but if they are this is a very solid offering!

I always hesitate to write a review right after I install an electronic device especially it is associated with computers, but I'll make an exception here and if my opinion changes in the future, I promise to revise it. As you can see, I gave this five stars. The product went in smoothly and easily with no connection problems. It is connected to a Dell ultrawide display and four desktop PCs all running Win11. It's easy to use. The hotkey switching works quickly (you can use the keyboard or the mouse for fast efficient switching). It's IDID emulation is perfect. I've tried other switches costing over $500 that I had to return because of faulty performance and/or overly complex installation and operation. This device has been a dream so far and I heartily recommend it to anyone with similar needs.

This TESmert 4K@144Hz DisplayPort KVM switch exceeded my expectations in every way. Setup was quick and straightforward, and everything worked right out of the box with zero headaches. The biggest win for me is the true 4K @ 144Hz performance because there is no lag, no flickering, and crystal-clear visuals. If you’re running high-end monitors or doing anything that demands smooth refresh rates (gaming, trading, multitasking), this handles it effortlessly. The G-Sync/FreeSync compatibility is a huge bonus and works flawlessly.

Switching between multiple PCs is instant and smooth. The hotkey function and IR remote make it incredibly convenient, especially when managing several systems at once. I also appreciate the EDID emulator, which keeps everything stable, meaning no screen rearranging or resolution issues when switching. Build quality feels solid, cables included are a nice touch, and the daisy chain capability makes this future-proof if you want to expand your setup.

Bottom line:

If you’re serious about a multi-PC setup and want top-tier performance without compromise, this KVM is absolutely worth it. Clean, fast, reliable and exactly what a premium switch should be. Definitely recommended!