Most people who search for a KVM switch have first searched for a hub or a dock, because the three sound alike and do opposite jobs. A hub or a docking station adds ports, screens and power to one computer. A KVM switch does the reverse: it lets two computers share one keyboard, one mouse and, on most models, one monitor, so a single set of gear serves both machines and you swap between them with a button. If you only have one computer, no KVM will help you; if you have two, this is the box that clears the desk.
The first real decision is whether you need the screen switched at all. If your two computers already drive their own monitors and the only irritation is two keyboards and two mice, a plain USB switch is the honest, cheapest answer and there's nothing more to buy. If you want one shared monitor to follow whichever machine is active, you want a true KVM that switches video as well, and that is where most of the price and most of the spec sheet go.
The second decision is the connector. A KVM that switches video is built for one video standard, and HDMI and DisplayPort switches are not interchangeable, so match the switch to the port your monitor uses. Both video picks below are HDMI. After that it comes down to how many screens you switch and how high they go, and the three picks here spread neatly across exactly those choices. One honest note up front: at our quality bar, the switches we could stand behind were all made by UGREEN, so this is a narrow field rather than a brand contest, and the How we chose section says why.
Top picks
1. UGREEN Aluminium HDMI KVM Switch (2 Computers, 1 Monitor) - Best Overall
SPP Score: 8.9 / 10 - Switches one screen, keyboard and mouse between two PCs. Our all-round pick.
Capability 8.5/10 - Versatility 8.5/10 - Build 8.9/10 - Value 8.9/10 - Fit 9.4/10
Fit for this guide: The archetypal switch the title asks for: one monitor, keyboard and mouse follow the button, and two HDMI cables are in the box.
Every pick here is scored out of 10: four marks rate the product and are the same in every guide, and the fifth rates its fit for this guide - how we test and score.
This is the switch that answers the plain "best KVM" search, because it does the thing the name promises without asking you to think about it. Press the button and one monitor, one keyboard and one mouse move to the other computer; press it again and they come back. UGREEN's listing rates the video at up to 4K@60Hz over a single HDMI monitor, which covers an ordinary desk display comfortably, and it puts two HDMI cables in the box, so the one thing people forget to order alongside a KVM is already handled. The housing is aluminium rather than bare plastic, a small thing you notice on a desk box that lives among cables. It switches two computers, no more, and it drives a single monitor, so a two-screen desk is the premium pick's job, not this one's.
Pros
- ✓ Switches one monitor, keyboard and mouse between two computers with a button
- ✓ UGREEN rates it for a single HDMI monitor at up to 4K@60Hz
- ✓ Two HDMI cables in the box, so there's nothing else to buy to get started
Cons
- ✗ One monitor only, so a two-screen desk needs the premium pick below
- ✗ Its 4K@60Hz ceiling caps a higher-refresh monitor
- ✗ HDMI only, so a DisplayPort monitor needs a different switch
Who it's for: Anyone with two computers and one HDMI monitor who wants a single keyboard, mouse and screen to serve both.
Who it's not for: Desks with two monitors, or anyone whose monitor connects by DisplayPort rather than HDMI.
2. UGREEN USB 3.0 Switch (2 Computers, 4 USB Devices) - Best Budget
SPP Score: 8.4 / 10 - Shares a keyboard, mouse and two more USB devices, no screen. Our value pick.
Capability 8.0/10 - Versatility 8.0/10 - Build 8.9/10 - Value 8.9/10 - Fit 8.5/10
Fit for this guide: The right answer when both computers already have their own screen and you only need to share the keyboard, mouse and USB gear.
Before you spend on video switching, check whether you actually need it. If your two computers each already drive their own monitor, the only thing cluttering the desk is a second keyboard and a second mouse, and this solves exactly that for the least money. UGREEN's listing describes it as a USB 3.0 switch that shares four USB devices between two computers, so a keyboard, a mouse and a couple of extras like a webcam or a drive all follow the button while each screen stays plugged into its own machine. What you give up is in the name: it switches no video at all, so it's a USB switch rather than a full KVM, and if you ever want one shared monitor you'll be back to the picks above. One quirk worth knowing about any USB switch is that a device which dislikes being disconnected mid-use, some external drives especially, can object when the port swaps away, so switch when you're not in the middle of a transfer.
Pros
- ✓ Clears two keyboards and two mice off a two-computer desk for the least outlay
- ✓ Shares four USB devices, so a webcam or drive switches along with the keyboard and mouse
- ✓ Leaves each monitor plugged into its own machine, so there's no display handshake to wait for
Cons
- ✗ No video switching at all, so it can't share one monitor between the two computers
- ✗ A USB device mid-transfer can object to the port swapping away
Who it's for: Two-computer desks where each machine already has its own screen and only the keyboard, mouse and USB gear need sharing.
Who it's not for: Anyone who wants one monitor to follow the active computer, which needs a video KVM above.
3. UGREEN HDMI KVM Switch (2 Computers, 2 Monitors, 8K@60Hz) - Best Premium
SPP Score: 8.7 / 10 - Switches a two-screen desk between two computers at a higher ceiling. Our pick for maximum capability.
Capability 9.4/10 - Versatility 8.9/10 - Build 8.9/10 - Value 8.5/10 - Fit 8.0/10
Fit for this guide: A narrower answer than the title's: a two-screen desk shared between two computers, with an 8K ceiling most setups never reach.
This is the pick for the desk that runs two monitors, not one. Where the overall switch moves a single screen, this one switches a dual-monitor setup between two computers, so both displays, the keyboard and the mouse all follow the button together. UGREEN lists a higher video ceiling too, up to 8K@60Hz and 4K@120Hz, which is real headroom for a high-resolution or high-refresh monitor, with the usual catch that a ceiling only matters if both your computer and the monitor actually reach it, and most people's screens sit well below it. The extra screen and the higher ceiling are genuine hardware, which lifts its raw capability, but the pick still sits behind the overall one on fit: they answer a narrower question than "the best KVM for my desk". Buy it if you already run two monitors and want both to switch; buy the overall pick if one screen is your setup.
Pros
- ✓ Switches two HDMI monitors, not one, between the two computers
- ✓ UGREEN lists a higher video ceiling, up to 8K@60Hz and 4K@120Hz
- ✓ The most capable switch here for a high-resolution or high-refresh desk
Cons
- ✗ Most people run one monitor, so the second-screen switching goes unused
- ✗ Its headline 8K@60Hz and 4K@120Hz modes are wasted on an ordinary monitor
- ✗ A dual-monitor KVM means more video cables behind the desk before anything is switched
Who it's for: Two-computer desks that already run two monitors and want both screens to switch together.
Who it's not for: Single-monitor setups, where the overall pick does the same job for less.
Quick verdict
For the common desk, two computers and one HDMI monitor, the UGREEN Aluminium HDMI KVM Switch (2 Computers, 1 Monitor) is the one to buy: it switches the screen, keyboard and mouse with a button and includes the HDMI cables to do it. If both your machines already have their own screen and you only need to share the keyboard, mouse and USB gear, the UGREEN USB 3.0 Switch (2 Computers, 4 USB Devices) does that for less and skips video entirely. And if your desk already runs two monitors, the UGREEN HDMI KVM Switch (2 Computers, 2 Monitors, 8K@60Hz) switches both screens at once at a higher ceiling. Not sure a switch is even the box you need? Our USB-C hub versus docking station guide sorts out the one-computer alternatives, and if you're worried a switch will slow your gaming, whether a KVM adds lag covers what actually happens on a swap.
How we chose
We started from what the box is for rather than from a brand. A KVM's job is to switch one set of peripherals between two or more computers, so the specs that matter are how many computers it takes, whether it switches video and at what resolution, how many monitors it drives, and the connector it uses. We read each switch's own listing for those figures and matched the three picks to the three real decisions: no video, one screen, or two. One honest note on the field. At our quality bar, the switches we could recommend with confidence were all made by UGREEN; the other brands we looked at didn't clear the same checks, so this is a narrow category rather than a wide one, and we'd rather say so than pad the list. We take no payment for placement. Two things are worth checking on the listing yourself before you buy: what's in the box, since cable bundles differ between models, and that the connector matches your monitor, because an HDMI switch won't help a DisplayPort-only screen.
FAQ
Q: What's the difference between a KVM switch, a USB hub and a docking station? A: They point in opposite directions. A hub or a dock expands one computer, adding ports, another screen or more power down a single cable. A KVM goes the other way, letting two or more computers take turns on one keyboard, mouse and often one monitor at the press of a button. With a single machine you want a hub or a dock, and our USB-C hub versus docking station guide covers those.
Q: Do I need a KVM that switches video, or just a USB switch? A: If both computers already drive their own monitor and you only want to share the keyboard, mouse and USB gear, a USB switch like the budget pick is the cheaper, simpler answer and there's no display to re-detect on a swap. If you want one shared monitor to follow the active computer, you need a video KVM like the overall or premium pick.
Q: Will an HDMI KVM work with a DisplayPort monitor? A: No. A video KVM is built for one standard, and HDMI and DisplayPort aren't interchangeable, so match the switch to the port your monitor uses. Both video picks here are HDMI; a DisplayPort-only monitor needs a DisplayPort switch instead.
Q: Does a KVM switch add lag or lower my refresh rate? A: Short version: the switch only caps your refresh rate if its stated video ceiling or the cables sit below your monitor's mode, so match all three and nothing drops. The longer answer, including what actually happens the moment you swap between machines, is its own guide: does a KVM switch add lag.
Q: How many computers can a KVM switch connect? A: All three picks here switch between two computers, which is by far the most common setup, a work machine and a personal one, say. Switches for four or more computers exist, but they're a different class of box; for two, these cover it.
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