Gear Guide

Best KVM Switch for
2 Computers (2026)

By DeskDNA Editorial Team · Reviewed September 2026 · How we test

If you run a work laptop and a personal or gaming PC at the same desk, a KVM switch lets both share one monitor, keyboard, and mouse — one button instead of a cable swap. The right pick depends on one question: does your monitor already have a spare input, and do you need 4K, high refresh, or laptop charging?

Quick answer: The UGREEN HDMI KVM (~$70, 4K@60Hz, cables and controller included) is the best pick for most hybrid desks sharing one monitor. If your monitor already has two inputs, save money with a peripheral-only USB switch (~$40). Step up to a DisplayPort KVM (~$160) for 4K/144Hz, or a USB-C dock (~$200) if both machines are laptops.

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Best Budget

UGREEN USB 3.0 Sharing Switch — Peripherals Only

$40

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Why we chose it

“The cheapest correct answer for a lot of setups — if your monitor has two inputs, skip the video KVM and just share peripherals.”

Pros

✓Shares one keyboard, mouse, and USB devices between two computers over USB 3.0 at 5Gbps — no video switching
✓The right pick if your monitor already has two inputs: you toggle the display, this toggles everything else
✓One button (or hotkey) moves all peripherals between both machines in about a second
✓Plug-and-play with no drivers on Windows, macOS, and Linux, for around $40

Trade-offs

✗Does not switch the monitor — only useful if your display already has a spare HDMI or DisplayPort input
✗No video path at all, so nothing to configure for 4K or high refresh; it is strictly a peripheral sharer

Best for: Anyone whose monitor already has two video inputs and only needs to share a keyboard, mouse, and dock between two PCs.

Best Overall

UGREEN HDMI KVM — 2 PCs, 1 Monitor, 4K@60Hz

$70

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Why we chose it

“Buy this first. One monitor, one keyboard, one mouse across two computers for around $70 — cables and controller included.”

Pros

✓Switches one HDMI monitor plus keyboard, mouse, and four USB 3.0 devices between two computers with one button
✓4K@60Hz, plus 1440p@120Hz and 1080p@240Hz — covers office resolution and mainstream high-refresh gaming
✓Ships with the desktop controller, two HDMI cables, and two USB cables — no separate $30 cable run to buy
✓Aluminum body with HDR passthrough, plug-and-play with no drivers on any OS

Trade-offs

✗HDMI caps below the DisplayPort tier — no 4K@144Hz for high-refresh 4K gaming
✗Single-monitor only; a dual-monitor KVM is a different, pricier box

Best for: Most hybrid workers sharing one monitor between a work laptop and a personal or gaming PC.

Best for High Refresh

TESmart DisplayPort 1.4 KVM — 4K@144Hz, VRR

$160

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Why we chose it

“The pick when you own a 4K/144Hz DisplayPort monitor — the HDMI KVMs cannot carry that signal, this one can.”

Pros

✓DisplayPort 1.4 carries 4K@144Hz (or 8K@60Hz) with VRR — G-Sync and FreeSync pass through for tear-free gaming
✓EDID emulation stops your windows rearranging every time you switch machines — the flaw cheap boxes have
✓SmartClip copies and pastes files directly between the two computers, no USB drive or cloud
✓USB 3.0 peripheral ports plus dedicated audio and microphone jacks

Trade-offs

✗At ~$160 it is over double the HDMI pick — only worth it for 4K high-refresh or pro creative work
✗DisplayPort-only inputs; a mixed HDMI-plus-DP setup needs the pricier HDMI+DP model

Best for: Gamers and creators on a high-refresh 4K DisplayPort monitor who refuse to drop frames when switching machines.

Best for Laptop Docking

Cable Matters USB-C KVM Dock — 100W PD

$200

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Why we chose it

“The one to buy if both machines are laptops — a single USB-C cable each replaces a charger, a dongle, and a KVM at once.”

Pros

✓One USB-C cable to each laptop carries video, USB peripherals, and up to 100W charging — dock and undock in a single plug
✓Dual 4K@60Hz output over DisplayPort and HDMI — drives one or two monitors from either machine
✓10Gbps USB-A and USB-C ports for fast external drives, not just a keyboard and mouse
✓Thunderbolt 4 compatible, so it works across a MacBook and a Windows laptop

Trade-offs

✗Built for two laptops, not desktops — a tower without USB-C video output cannot use the one-cable trick
✗At ~$200 it is the most expensive here; overkill unless you genuinely dock and undock daily

Best for: Two-laptop or laptop-plus-MacBook setups that want single-cable docking with charging, not just peripheral switching.

What to check before you buy

Do you need video?If your monitor has two inputs, a $40 peripheral switch is enough. If not, get an HDMI or DP video KVM.

Video standardHDMI covers 4K@60Hz / 1080p@240Hz. DisplayPort 1.4 is required for 4K@144Hz and VRR.

USB versionUSB 3.0 (5Gbps) for external drives and webcams. USB 2.0 boxes bottleneck fast peripherals.

Power deliveryOnly USB-C KVM docks charge a laptop (up to 100W). HDMI/DP KVMs carry no power.

EDID emulationKeeps windows from rearranging on every switch. Standard on better DP KVMs, rare on cheap ones.

Cables includedBetter kits bundle HDMI/DP + USB cables and a controller — saves ~$30 vs. buying separately.

Frequently Asked Questions

What is a KVM switch and do I need one?

A KVM (keyboard, video, mouse) switch lets two or more computers share one set of peripherals — and usually one monitor — so you press a button instead of unplugging cables. You need one if you run a work laptop and a personal or gaming PC at the same desk and want a single keyboard, mouse, and screen for both. If you only ever use one machine at a time and never switch, you do not need one.

Can a KVM switch use one monitor for two computers?

Yes — that is the main job of a video KVM. An HDMI KVM like the UGREEN 4K@60Hz ($70) takes the HDMI output of both computers and sends whichever you select to a single monitor, along with your keyboard and mouse. If your monitor has two video inputs of its own, you can skip the video KVM entirely and use a cheaper peripheral-only switch (~$40) instead.

Do I need a KVM switch if my monitor already has two inputs?

Not a full video KVM — you only need a peripheral switch. If your monitor has, say, an HDMI and a DisplayPort input, plug one computer into each, switch the monitor input with its own button, and use a $40 USB sharing switch (like the UGREEN USB 3.0 box) to move your keyboard, mouse, and dock between the two. That is the cheapest correct setup for a lot of people.

Will a KVM switch support 4K and high refresh rates?

It depends on the video standard. HDMI KVMs like the UGREEN ($70) handle 4K@60Hz and up to 1080p@240Hz — fine for office work and mainstream gaming. For 4K at 144Hz you need a DisplayPort 1.4 KVM such as the TESmart ($160), which also passes G-Sync/FreeSync VRR. Check that the KVM's rated resolution and refresh match your monitor, not just its highest headline number.

Can a KVM switch charge my laptop?

Only USB-C models with Power Delivery. A USB-C KVM dock like the Cable Matters ($200) sends video, USB peripherals, and up to 100W of charging down one cable to each laptop, so docking replaces a charger and a dongle at once. Standard HDMI and DisplayPort KVMs do not carry power — they only switch video and USB.

Does a KVM switch work with both Mac and Windows?

Yes. Every pick here is plug-and-play with no drivers on Windows, macOS, and Linux, and the USB-C dock is Thunderbolt 4 compatible so it works across a MacBook and a Windows laptop. The one thing to check is your keyboard: some Mac-specific keys behave differently when the same keyboard is switched to a Windows machine, but typing and the mouse work normally on both.