Daisy chaining means connecting monitors to each other instead of running separate cables to your computer

When you daisy chain monitors, the first monitor plugs into your computer, and the second monitor plugs into the first one. The signal passes through the first monitor to the second. This works only if your monitors have DisplayPort connections — not HDMI, not USB-C, and not older video cables. Even then, not all DisplayPort monitors support daisy chaining, so you need to check your monitor's manual or spec sheet before you buy.

Daisy chaining reduces cable clutter on your desk and behind your computer, and it uses only one video output on your computer instead of two or three. The trade-off is that both monitors share the same bandwidth, which can limit refresh rate or resolution on the second monitor, and troubleshooting is harder because the signal has to pass through the first monitor to reach the second.

Key Takeaways

  • Daisy chaining only works with DisplayPort connections, and your monitor manual must confirm it supports daisy chaining — not all DisplayPort monitors do.
  • Your computer's graphics card must also support daisy chaining over DisplayPort, which most modern cards do but some older ones do not.
  • Both monitors share one video bandwidth, so the second monitor may run at a lower refresh rate or resolution than it would if plugged in separately.
  • If the second monitor does not appear, restart your computer with both monitors already connected, because daisy-chained monitors are detected at startup.

Check your monitor's manual for daisy chain support

Not every monitor with a DisplayPort connection can daisy chain. Look up your monitor's model number and find the manual on the manufacturer's website — search for the model name plus "manual" or "spec sheet". Look for a section called "Daisy Chain" or "Multi-Stream Transport" (MST). If the manual does not mention it, the monitor does not support it.

If you are shopping for new monitors and want to daisy chain, search the product page for "daisy chain" or "MST support". Some manufacturers list it clearly; others bury it in the technical specifications. When in doubt, contact the manufacturer's support before you buy.

Verify your graphics card supports daisy chaining

Your computer's graphics card must support DisplayPort Multi-Stream Transport (MST) to daisy chain monitors. Most graphics cards made in the last five years do, but some older cards and some budget cards do not.

On Windows, right-click your desktop and open the graphics control panel — this will be NVIDIA Control Panel, AMD Radeon Settings, or Intel Graphics Command Center depending on your card. Look for a section about display settings or multi-display. If you see an option for "Multi-Stream Transport" or "MST", your card supports it. If you cannot find the option, search your graphics card model number plus "MST support" online, or contact the manufacturer.

On Mac, daisy chaining works with Thunderbolt displays and some USB-C displays, but the process is different — plug the first display into your Mac, then plug the second into the first. Check your display manual for Mac-specific instructions.

Connect the first monitor to your computer

Use a DisplayPort cable to connect the first monitor directly to your computer's DisplayPort output. If your computer has multiple DisplayPort outputs, use any one of them. Do not use an adapter to convert DisplayPort to HDMI or USB-C — adapters break daisy chaining.

Turn on the first monitor and let your computer detect it. On Windows, right-click the desktop and select "Display Settings" to confirm the monitor appears. On Mac, go to System Settings > Displays to confirm it is recognized.

Connect the second monitor to the first monitor

Look at the back of your first monitor for a second DisplayPort output — it will be labeled "DisplayPort Out" or "DisplayPort In/Out". Use a DisplayPort cable to connect this output to the DisplayPort input on your second monitor. Do not plug the second monitor into your computer.

Turn on the second monitor. Your computer should detect it automatically within a few seconds. If it does not appear, restart your computer with both monitors already powered on and connected — daisy-chained monitors are detected at startup, and restarting forces a full detection cycle.

Adjust resolution and refresh rate in display settings

Once both monitors appear in your display settings, check the refresh rate and resolution of each one. On Windows, right-click the desktop, select "Display Settings", click on the second monitor, and scroll down to "Refresh Rate". On Mac, go to System Settings > Displays, click the second monitor, and check the refresh rate option.

If the second monitor is running at a lower refresh rate than you expect, this is normal — daisy chaining shares bandwidth between both monitors. If you need both monitors at full speed, you will need to plug them into separate video outputs on your computer instead.

Troubleshoot if the second monitor does not appear

If you have connected both monitors correctly but the second one does not show up, restart your computer with both monitors powered on. Daisy-chained monitors must be detected at startup, so a restart often fixes the problem.

If restarting does not work, check that the cable between the two monitors is a true DisplayPort cable, not an adapter. Adapters do not work for daisy chaining. Also verify in your graphics control panel that MST is enabled — some cards have it turned off by default. If you still have no luck, try swapping which monitor is first and which is second, because some monitors only daisy chain in one direction.

Frequently Asked Questions

Can I daisy chain three or more monitors?

Yes, you can chain three or four monitors together, but each additional monitor shares more bandwidth and may reduce refresh rate or resolution further. Most people stop at two monitors because the performance trade-off becomes noticeable with three or more.

Does daisy chaining work with HDMI or USB-C?

Daisy chaining only works with DisplayPort. HDMI does not support it at all. Some USB-C displays can daisy chain, but only if they use DisplayPort over USB-C — check your monitor manual to confirm.

What if my computer only has one DisplayPort output?

Daisy chaining is the right choice for you, since it uses only one output. If your computer has no DisplayPort output at all, you will need a USB-C to DisplayPort adapter or a docking station that supports daisy chaining.

Will daisy chaining slow down my computer?

Daisy chaining does not slow down your computer itself, but it does limit the bandwidth available to both monitors combined. If you notice lag or stuttering, it is usually because the second monitor is running at a lower refresh rate than your graphics card can handle at that resolution.

Can I use different monitor models in a daisy chain?

Yes, you can mix different monitor models as long as both support daisy chaining and both have DisplayPort connections. The monitors do not need to match in size, resolution, or refresh rate.