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This article will show you how to set up a second monitor for your Windows or Mac computer. Using two monitors doubles the display space for your desktop.
Steps
Check the second screen support
- Some Windows laptops don’t support dual monitors, but all Apple MacBooks do – if you’re using a Mac, skip to the second monitor connection section. [1] X Research Source
- Again, if you use an Apple iMac desktop computer, you can use two monitors.
- For example, if you see two HDMI ports side by side horizontally (or vertically), it means your computer’s graphics card supports two monitors. This also applies to other outputs (such as the VGA output in addition to the HDMI output).
- Desktop Windows computers typically have these three ports on the back of the case.
- If you only see one video output port on your desktop, your computer’s graphics card only supports one monitor. Laptops with a single video output port can often support multiple monitors.
- Find the name of the motherboard.
- Type the name of the motherboard into a search engine (such as Google).
- Select a search result that lists motherboard features.
- Look for the “Multi-Display”, “Multi-Monitor” or “Dual Display” feature.
Second monitor connection
- DVI — A large piece of plastic with many small square holes inside.
- VGA — A colored trapezoidal piece of plastic with many round holes in it.
- HDMI — Slim and flat hexagonal port. This is the port found on most newer computers and televisions.
- DisplayPort — Similar to HDMI, but with an extra thin edge instead of symmetry.
- Thunderbpt — Available on the back of most iMac screens; Thunderbpt connector has lightning icon below. You can attach an adapter for the above video connections to the Thunderbpt port (such as VGA to Thunderbpt). [4] X Research Sources
- For example, you can connect a first display using a DisplayPort cable and connect a second display using HDMI.
- In some cases, you can set up a second monitor using a wireless connection. For example, if you want to use your iPad as a second display, you can create a wireless connection between the device and some computers through the Air Display app.
- Especially when you want to connect a second monitor to your iMac, you need a Thunderbpt cable or a Thunderbpt port adapter to connect to the port on the back of the monitor.
on the second monitor to power on and receive the signal from the primary monitor. You can now set the display options for the display on Windows or on Mac.
Chiara Corsaro
General Manager of macVpks
Chiara Corsaro is a General Manager and Apple Certified Mac & iOS Technician working for macVpks, an Apple Authorized Service Provider in the San Francisco Bay Area. macVpks was founded in 1990, is A+ certified by the Business Improvement Board (BBB), and is a member of the Apple Consultants Network (ACN).
General Manager of macVpks
In most cases, this is all you need to do. Usually, you just need to connect and then turn on the second monitor and the screen will show up automatically. However, if you want to adjust the settings, click ‘System Preference’ under ‘Display Settings’ to change the settings.
Set display options on Windows
. Click the Windows icon in the lower left corner of the screen.
. You will click the gear icon in the lower left corner of the Start window.
- Extend these displays — The second monitor will be an extension of the first.
- Duplicate these displays — Content on the first monitor will also be displayed on the second monitor.
- Show only on 1 — Content visible above the fold only.
- Show only on 2 — The content is visible only on the second monitor.
Set up display preferences on Mac
. Click the Apple icon in the upper left corner of the screen. A selection list will appear here.
- If you want both screens to display the same content, you can leave the check mark in the “Mirror Displays” box.
Advice
- Repeat the connection process for more monitors if your computer supports it. In this case, you can use three or more monitors.
Warning
- If the second monitor has a higher resolution than the primary monitor (or vice versa), you will have to reset the settings of the higher resolution monitor to be equal to the one with the lower resolution. A graphical error will appear if you skip this step.
This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
This article has been viewed 48,495 times.
This article will show you how to set up a second monitor for your Windows or Mac computer. Using two monitors doubles the display space for your desktop.
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