You have two laptops—perhaps one for work and another for personal use—but only one monitor, keyboard, and mouse on your desk.
Do you need a USB-C hub, a KVM switch, or a USB sharing switch?
The answer depends on your monitor's available inputs and how often you switch computers.
To share one monitor, keyboard, and mouse between two laptops, you can use a KVM switch or combine separate video and USB switching solutions. A standard USB-C hub only expands one laptop's ports—it doesn't switch control between two computers.
Here are three practical ways to build your setup without constantly unplugging cables.
Start With Your Monitor's Available Inputs
Before buying anything, check the ports on your monitor and laptops.
Look for:
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HDMI or DisplayPort inputs on the monitor
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HDMI or video-capable USB-C outputs on each laptop
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USB-A or USB-C connections for your keyboard and mouse
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Built-in KVM functionality, if available
The number of monitor inputs determines which connection layout may be simplest.
| Your Setup | Recommended Solution |
|---|---|
| Monitor has two video inputs | Monitor input switching + USB sharing switch |
| Monitor has only one HDMI input | HDMI switch + USB sharing switch |
| Want one-button switching for everything | KVM switch |
| Laptop lacks HDMI or USB ports | USB-C hub alongside the appropriate switch |
The important distinction is that video switching and USB peripheral switching are separate functions unless you use a KVM designed to handle both.
Setup A: Use Two Monitor Inputs and a USB Sharing Switch
If your monitor has two available video inputs, you may not need a full KVM.
For example, your monitor might include HDMI 1 and HDMI 2, or HDMI and DisplayPort.
Connection Layout
Video Connections
Laptop A → HDMI 1 → Monitor
Laptop B → HDMI 2 → Monitor
Keyboard and Mouse Connections
Keyboard + Mouse → USB Sharing Switch → Laptop A / Laptop B
A USB sharing switch connects compatible USB peripherals to two host computers and lets you choose which laptop controls them.
For example, a USB sharing switch between two computers can switch connected USB devices using a physical button, without switching the monitor's video signal.
How to Switch Between Laptops
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Select the desired video input using the monitor's input menu.
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Press the USB sharing switch button to select the same laptop.
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Continue using your existing keyboard, mouse, and monitor.
Best for: Users who switch between work and personal laptops occasionally and already have a monitor with multiple inputs.
The disadvantage is that you must switch the monitor and USB peripherals separately.
Setup B: Use an HDMI Switch and a USB Sharing Switch
What if your monitor has only one HDMI input?
In that case, an HDMI switch allows two laptops to share the same display connection.
Connection Layout
Video Connections
Laptop A → HDMI Switch Input 1
Laptop B → HDMI Switch Input 2
HDMI Switch Output → Monitor
Keyboard and Mouse Connections
Keyboard + Mouse → USB Sharing Switch → Both Laptops
The HDMI switch selects which laptop sends video to the monitor. The USB sharing switch independently selects which laptop controls the keyboard and mouse.
Where an HDMI Switch Fits
A 2-in-1-out HDMI switch for two laptops, such as the LENTION CB-S31, allows two HDMI sources to share one display.
Its main features include:
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Two HDMI inputs with one selected output
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Video resolution up to 4K@30Hz
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Button-controlled source selection
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No external power adapter required
For a basic home-office setup, this offers a practical way to switch the monitor without moving HDMI cables.
Important: CB-S31 switches HDMI video only. It does not switch USB keyboards, mice, or other peripherals. You still need a separate USB sharing switch if both laptops must use the same wired accessories.
What If One Laptop Has No HDMI Port?
Some modern laptops only provide USB-C connections.
In that situation, a 7-in-1 USB-C hub with HDMI and USB 3.0, such as the LENTION CB-C36B, can provide the missing HDMI output.
The hub includes:
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HDMI output up to 4K@30Hz
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Three USB 3.0 data ports
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SD and Micro SD card readers
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Up to 100W PD pass-through charging
A possible setup becomes:
USB-C Laptop → CB-C36B → HDMI Switch → Monitor
The other laptop connects to the switch's second HDMI input.
This arrangement requires the laptop's USB-C port to support video output, such as DisplayPort Alt Mode or a compatible Thunderbolt connection.
Remember that the CB-C36B expands one laptop's ports; it does not independently switch between two computers.
Setup C: Use a KVM Switch for One-Button Control
If you switch between laptops several times a day, a KVM switch is often more convenient.
KVM stands for Keyboard, Video, and Mouse.
Unlike a simple HDMI switch, a compatible KVM can handle both display output and USB peripheral control.
Connection Layout
Laptop A → KVM Video + USB Inputs
Laptop B → KVM Video + USB Inputs
KVM → Monitor + Keyboard + Mouse
Press the KVM's switching button or use its supported switching method to move control between the two computers.
Some monitors also include built-in KVM functionality.
Dell's official guide explains how a built-in monitor KVM setup uses video connections and USB upstream connections to let two computers share a monitor and input devices.
When a KVM Makes More Sense
Choose a KVM when:
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You frequently alternate between two laptops.
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You want the monitor and input devices to switch together.
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You prefer fewer manual switching steps.
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Your work involves a permanent two-computer desk.
A KVM costs more than some basic switching arrangements, but it can provide a simpler daily workflow.
For a deeper comparison of what each product actually does, understanding docking station vs KVM switch is useful before choosing a complete desktop setup.
Where Does a USB-C Hub Fit Into a Two-Laptop Setup?
A USB-C hub is best understood as an expansion device.
It can add:
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HDMI output
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USB-A connections
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Memory card readers
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Laptop charging support
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Other compatible peripherals
However, connecting one USB-C hub to Laptop A does not automatically make its ports available to Laptop B.
For users deciding whether a compact adapter is sufficient, a guide to USB-C hub laptop port expansion can help identify which connections are actually needed.
The simplest rule is:
USB-C Hub = More ports
USB Sharing Switch = Shared USB peripherals
HDMI Switch = Shared display input
KVM Switch = Shared video and USB peripherals
These devices can work together, but they are not interchangeable.
Five Things to Check Before Buying
1. Video Resolution and Refresh Rate
Check the video capabilities of every device in the connection path.
For example, even if your laptop and monitor support 4K@60Hz, a switch limited to 4K@30Hz will restrict the setup to 4K@30Hz at that resolution.
2. USB Connections for Both Laptops
A USB sharing switch or conventional KVM may require a separate USB host connection for each laptop.
An HDMI cable alone does not carry keyboard and mouse input between computers.
3. USB-C Video Compatibility
Not every USB-C port supports external displays.
Check your laptop's specifications before selecting a USB-C hub with HDMI.
4. Laptop Charging
A basic HDMI switch or USB sharing switch generally does not charge your laptop.
If charging through USB-C is important, check whether the hub, dock, or compatible KVM provides the required Power Delivery functionality.
5. Switching Reliability
Some KVM setups temporarily disconnect video and USB devices during switching.
If the monitor or peripherals disappear after changing computers, troubleshooting KVM switching issues with monitors and USB devices can help identify which connection is failing.
FAQ
Can I use one USB-C hub for two laptops?
A standard USB-C hub connects to one host computer at a time. You can manually move its host cable between laptops, but it cannot automatically switch shared peripherals like a KVM.
Do I need a KVM if my monitor has two HDMI inputs?
Not necessarily. You can connect each laptop to a different monitor input and use a separate USB sharing switch for the keyboard and mouse. A KVM is more convenient when you want coordinated switching.
Can an HDMI switch share a keyboard and mouse?
No. A standard HDMI switch handles video signals. A USB sharing switch or KVM is required to share compatible USB input devices.
Can I connect a USB-C hub to a KVM?
Yes, if the hub's video and USB connections are compatible with the KVM's required inputs. Check both devices' specifications, including resolution, upstream USB connectivity, and power requirements.
Final Thoughts: Which Setup Should You Choose?
To share one monitor, keyboard, and mouse between two laptops, start with the equipment you already have.
Monitor has multiple inputs? Use the monitor's input selector and a USB sharing switch.
Monitor has only one HDMI input? Combine an HDMI switch with a USB sharing switch.
Switch between laptops frequently? Choose a compatible KVM for easier control.
Laptop lacks HDMI or USB ports? Add a USB-C hub to provide the missing connections.
The best two-laptop desk setup is not necessarily the one with the most adapters. It is the one that gives each device a clear purpose while keeping switching simple.
