Adapter to hook up 2 monitors

If you want to connect two external monitors to your laptop to buy an extra adapter, such as DVI to HDMI adapter to have them match. 2) Plug the cable of the second external monitor to the other correct port on your laptop.
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Most laptops will start to show serious performance issues if you try to add two or more monitors in this fashion. We covered this briefly under Thunderbolt, but a docking station is a popular alternative to multiple adapters for power users. USB-only alternatives are available, but generally less powerful—more expensive options offer more flexible video ports.

A model-specific expansion dock with multiple video outputs might do if you want to keep your laptop mobile with the minimum amount of setup and teardown time at your desk. A more specialized version of this idea is the external graphics card.

The second screen

These gadgets are really cool, because they let you hook up a full desktop-class GPU to a laptop and output to as many monitors as that card can support—usually three or four, for the mid-range options from NVIDIA and ATI. They also require a USB 3.


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The Best Tech Newsletter Anywhere. Monitors You can use any LCD or CRT-style monitor as your second monitor but to make it easier, obtain a monitor that contains the same type of monitor cable as the monitor you are currently using. Monitor Cables Some monitors come with cables and some do not. Connectors Your computer needs a second monitor connector port on its video card or within its bundle of ports.

Windows 8 Windows 8 includes a wizard that detects and sets up a second monitor but you have to launch the operating system's Device wizard to start the detection process.


  • What Is Needed to Run Two Monitors Off of One Computer?.
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    Determine your computer's video connection type. On the back of your computer's CPU box or monitor if you're using an iMac , you should see several ports, one of which is currently being used for your main monitor. Common connection ports include the following: DVI — A wide piece of plastic with numerous small square holes in it. VGA — A trapezoid-shaped piece of colored plastic with several pinholes in it. HDMI — A thin, flat, hexagonal port. These are on most modern computers and TVs. Thunderbolt — Found on the backs of most iMac monitors, the Thunderbolt connection has a lightning bolt icon beneath it.

    You can connect an adapter for any of the above video connections to a Thunderbolt port e. Check the second monitor's connection type.

    Your second monitor should have at least one of the previously mentioned connection types. You don't have to use the same connection that you use for your first monitor on your second monitor. Buy any cables or adapters that you don't have. If you don't have the proper cable or adapter that you need to attach your second monitor to the computer, you can find it online or in a tech department store.

    Especially if you're connecting a second monitor to an iMac, you'll need either a Thunderbolt cable or a port-to-Thunderbolt adapter for the back of the monitor. Connect the second monitor to the computer. Plug one end of the second monitor's video cable into the back of the computer, then plug the other end into the second monitor.

    Connect the second monitor to a power source. Plug your monitor's power cable into an electrical outlet, such as a wall socket or a surge protector. Turn on the second monitor. It's a computer monitor-shaped icon in the Settings window.

    Monitor Cables

    Click the Display tab. You'll find this in the upper-left side of the window. Scroll down to the "Multiple displays" section. It's at the bottom of the page.

    How To Connect Two Monitors To One Computer

    Click the "Multiple displays" drop-down box. You'll find this box just below the "Multiple displays" heading. A drop-down menu will appear. Select a display option. In the drop-down menu, click one of the following options depending on your preferences: Duplicate these displays — Displays the first monitor's contents on the second monitor.

    Set up a second screen for your computer

    Show only on 1 — Shows content only on the first monitor. Show only on 2 — Shows content only on the second monitor. It's below the drop-down box. Click Keep settings when prompted.

    How to Connect Multiple External Monitors to Your Laptop

    Doing so will apply your display settings. If you chose to extend your desktop, you'll now see your desktop split between the first monitor and the second monitor. Open the Apple menu. It's near the top of the Apple drop-down menu.