Using a MacBook and Windows PC at the same desk is increasingly common.

You might use a MacBook for work, meetings, and everyday productivity, while a Windows PC handles gaming, development, creative work, or personal projects.

But both computers often need the same monitors, keyboard, mouse, headset, webcam, Ethernet, and USB devices.

Instead of switching monitor inputs and reconnecting peripherals every time you change computers, a KVM switch lets both systems share one workstation.

Choosing the right one comes down to one simple question:

Is your Windows computer a desktop or another USB-C laptop?

  • MacBook + Windows desktop → TESmert T722

  • MacBook + Windows laptop → TESmert T422

Both support dual monitors, shared peripherals, independent display switching, and built-in EDID emulation. The main difference is how they connect to your computers.


T722 vs T422: Quick Comparison

Your Setup Best Choice Why
MacBook + Windows desktop TESmert T722 Built for a USB-C laptop + desktop workstation
MacBook + Windows USB-C laptop TESmert T422 Built for two USB-C laptops

If you already know which type of Windows computer you use, the choice is usually that simple.


Best for MacBook + Windows Desktop: TESmert T722

If your setup combines a MacBook with a desktop PC, the TESmert T722 is the more natural fit.

Unlike a traditional KVM that expects both computers to connect in the same way, the T722 is designed specifically for a laptop + desktop workstation.

The laptop side uses USB-C, while the desktop connects through HDMI, DisplayPort, and USB.

Both computers can then share:

  • Two HDMI monitors

  • Keyboard and mouse

  • USB peripherals

  • Audio devices

  • Gigabit Ethernet

The USB-C laptop connection also supports up to 100W Power Delivery.

Keep Both Computers Visible

One of the most useful T722 features is independent display switching.

You don't always have to switch both monitors to the same computer.

For example:

Monitor 1 → MacBook
Monitor 2 → Windows PC

This lets you keep both systems visible at the same time—useful when you're monitoring something on one computer while actively working on the other.

EDID Emulator for Smoother Switching

The T722 includes a built-in EDID Emulator (Ghost Display).

When switching between computers, a monitor can sometimes appear disconnected to the inactive system. This may cause screen re-detection, resolution changes, or windows to move and rearrange.

The EDID Emulator helps preserve monitor information during switching, reducing unnecessary changes to your desktop layout.

USB and audio can also follow the active computer or remain assigned to a specific system, giving you more flexibility over how your shared devices behave.

Who Is the T722 For?

The T722 is the better choice if your desk includes:

  • A MacBook

  • A Windows desktop

  • Two monitors

  • Shared keyboard, mouse, and USB devices

  • Frequent switching between work and personal systems

Using a MacBook with a desktop PC?

See How T722 Fits Your Setup →


Best for MacBook + Windows Laptop: TESmert T422

If both computers are laptops, the TESmert T422 is usually the cleaner solution.

Instead of combining laptop and desktop connections, the T422 is built around two USB-C laptops.

A typical setup might be:

Personal MacBook + Company Windows Laptop

Both laptops can share:

  • Two HDMI monitors

  • Keyboard and mouse

  • USB peripherals

  • Audio

  • Gigabit Ethernet

Each compatible USB-C laptop can also receive up to 65W Power Delivery.

One Monitor for Each Laptop

The T422 also supports independent display switching.

You can use both monitors with one laptop, or split them:

Monitor 1 → MacBook
Monitor 2 → Windows laptop

This is useful for remote workers, developers, and professionals who need information from both systems visible at the same time.

A Cleaner Two-Laptop Workspace

Because both computer inputs are designed around USB-C laptops, the T422 is especially convenient if you frequently dock and undock either device.

Its built-in EDID Emulator also helps preserve monitor information during switching, reducing screen re-detection and unwanted window rearrangement.

USB and audio switching can be managed separately as well, giving you more control over how shared peripherals behave.

Who Is the T422 For?

Choose the T422 if you have:

  • A MacBook

  • A Windows USB-C laptop

  • Two monitors

  • A shared workstation

  • Frequent laptop docking and undocking

Using two laptops at one desk?

See How T422 Fits Your Setup →


Important: Check Your MacBook's Dual-Monitor Support

Before buying any dual-monitor KVM, check how many external displays your specific MacBook supports.

A dual-monitor KVM cannot add display capability that the Mac itself does not support.

There is also an important difference between Windows and macOS.

Compatible Windows laptops can use MST to carry two independent displays through a single USB-C connection.

macOS does not support MST for two independent extended displays in the same way. With the T722 or T422, dual-display output on macOS uses SST and requires two USB-C connections.

Your MacBook must also natively support the number of external displays you want to use.

Before purchasing, check:

  • How many external displays your Mac supports

  • Whether its USB-C or Thunderbolt ports support video output

  • Your required resolution and refresh rate

This is the most important compatibility check for MacBook users.


T722 or T422: Which One Should You Choose?

The difference comes down to your Windows computer.

Choose the T722 if you use:

MacBook + Windows Desktop

The T722's hybrid laptop-and-desktop architecture is designed specifically for this type of workstation.

You also get up to 100W laptop charging, independent monitor switching, EDID emulation, shared USB devices, audio, and Ethernet.

Choose the T422 if you use:

MacBook + Windows USB-C Laptop

Its dual USB-C laptop architecture is a better match for two portable computers, with up to 65W charging per laptop plus the same flexible dual-monitor switching.

There isn't one model that is better for everyone.

The better KVM is the one that matches the computers already on your desk.


Frequently Asked Questions

Can a MacBook and Windows PC share two monitors?

Yes, as long as both computers support the required number of external displays.

A dual-monitor KVM allows both systems to remain connected while sharing the same monitors and peripherals.

Can I show my MacBook on one monitor and Windows on the other?

Yes.

Both the T722 and T422 support independent display switching, allowing one monitor to display your MacBook while the other displays your Windows computer.

Can a MacBook use two monitors through one USB-C cable?

Not through MST.

macOS does not support MST for two independent extended displays. With the T722 or T422, macOS dual-display output requires two USB-C connections, and the Mac itself must support two external displays.

What does the EDID Emulator do?

The EDID Emulator helps the computer maintain monitor information even when the display is switched to another system.

This can reduce display re-detection, resolution changes, and window rearrangement when switching between computers frequently.

Do I still need a docking station?

For many setups, you may not.

The T722 and T422 combine KVM switching with several docking functions, including monitor connectivity, USB peripheral sharing, Gigabit Ethernet, audio, and USB-C charging.

A normal dock expands one laptop.

A KVM docking station allows two computers to share the same workstation.


Final Thoughts

If you use a MacBook and Windows computer at the same desk, choosing the right KVM doesn't need to be complicated.

MacBook + Windows desktop → T722

MacBook + Windows USB-C laptop → T422

The real value goes beyond simply switching between two computers.

Features such as independent monitor switching, EDID emulation, shared peripherals, USB-C charging, and the right connection architecture can turn two separate computer setups into one much cleaner workspace.

Ready to simplify your Mac + Windows setup?

Shop T722 →

Shop T422 →

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