how to connect an external monitor to an imac?
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Choose the right cable and adapter. For the iMac, buy a Mini DisplayPort adapter that will enable you to connect the iMac to an external display. The adapter can be used for both Thunderbolt ports and DisplayPorts. This adapter allows you to connect your iMac to an external display via HDMI, DVI, or VGA.
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['Connect to computer 2 with USB VGA and HDMI cable. [00:22]', 'Connect the keyboard. [00:47]', 'Monitor 1. [00:55]', 'Connect the power cable. [01:00]', 'Turn in the power button. [01:03]']
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Connect the monitor cable from the second external monitor to the video port on the USB video adapter. If the connectors do not match, use the adapter plug that comes with the video adapter to match the connector on the monitor cable. Power on the second external monitor.
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Connect your Mac to your TV Connect one end of the video cable (or an adapter, if necessary) to the computer's Thunderbolt port , HDMI port, or DVI port , then connect the other end of the cable to the TV's video input port.
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Set up the second monitor on a PC by right-clicking the Desktop and then clicking Properties. On the Display Properties window, click the Settings tab. Click the Display drop-down list, and select External Monitor. Check the box Extend my Windows Desktop onto this Monitor, and then click Identify.
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Arrange Your Displays With your external display(s) connected, launch System Preferences > Displays. On your primary display (i.e., your MacBook or iMac screen), click the “Arrangement” tab. All detected displays are visible on the diagram. Click and hold on a display to show a red outline on the corresponding monitor.
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Set up the displays for video mirroring Video mirroring shows the entire desktop on each connected display. On your Mac, choose Apple menu > System Preferences, click Displays, then click Display. Set both displays to the same resolution. Click Arrangement, then select Mirror Displays.
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Choose Apple menu > System Preferences, then click Sound. In the Output pane, make sure that your HDMI device is selected. If you're connecting using a Mini DisplayPort adapter, make sure that your Mac can send audio over Mini DisplayPort.
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Specifically, Apple provides two options to connect an external monitor to the Retina Display MacBook -- the Apple USB-C Digital AV Multiport Adapter (MJ1K2AM/A), which has an HDMI port, and the Apple USB-C VGA Multiport Adapter (MJ1L2AM/A), which has an old school VGA port.
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The 27-inch iMac has a bi-directional Mini DisplayPort or a Thunderbolt port (depending on the model) that can be used to drive a second monitor. The same Mini DisplayPort or Thunderbolt port can be used as a video input that allows your iMac to serve as a monitor for another Mac.
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Step 1 Power off your Windows PC and iMac. Step 2 Plug one end of the compatible cable into the HDMI, Display Port, Thunderbolt port on your PC's or Laptop. Step 3 Plug the other end of the cable to Mini DisplayPort or Thunderbolt connector on your iMac. Step 4 Power on the PC & iMac.
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As mentioned above, to connect your iMac to an external monitor, you'll need an iMac monitor adapter cable. You can get these from a variety of sources, but here are links to these iMac adapter cables on the Apple store website: Apple Mini DisplayPort to DVI Adapter - $29. Apple Mini DisplayPort to VGA Adapter - $29.
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['Select a connection type based on your second monitor. ... ', 'Connect the TV or monitor to the computer using the cable you chose.', 'Connect a power cable to the TV or monitor, and then turn it on.']
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iMac as second display All you'll need is a Mini DisplayPort or Thunderbolt compatible MacBook, iMac and the appropriate cable to connect the two. The cable will need to be plugged into the Mini DisplayPort or Thunderbolt port on your Macbook, and then again in the corresponding port on the iMac.
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['On your Mac, choose Apple menu > System Preferences, click Displays, then click Display. Open the Display pane for me.', 'Set both displays to the same resolution.', 'Click Arrangement, then select Mirror Displays.']
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To connect the external display to a laptop, locate the correct port on the body of your laptop. Most laptops utilize on or more of the following connections: HDMI, DisplayPort, DVI, or USB-C (Thunderbolt 3). Some older laptops use VGA.
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['Connect your second monitor to your computer using the spare graphics card port. ... ', 'Click "Start," then "Control Panel," then scroll down to the "Appearance and Personalization" settings. ... ', 'Click the "Multiple displays" drop-down menu and click "Extend these displays."']