computer: MacBook Pro (13-inch, Mid 2012) - 1TB SSD - Intel HD Graphics 4000 1536 MB - 8 GB 1600 MHz DDR3 - 2.9 GHz Dual-Core Intel Core i7 Currently, have one monitor setup using a thunderbolt to HDMI adapter all good there, but how can I add another external monitor? The second monitor has a VGA, DisplayPort, HDMI, and USB 2 port. Both monitors are HP. What's the cheapest way to run two external monitors in this situation? I would prefer an HDMI cable method since I already have two of these. I will not have my MacBook open when using two monitors. Thank you in advance for your time and help!
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How do I find out the number, type, resolution &amp; refresh rate of additional monitors I can attach to my MacBook or MacBook Pro?  This is an attempt at a canonical QA, as per the Meta QA -   to try prevent the myriad "same but different" questions we get on every possible combination of computers, cable &amp; monitors There are perfectly good resources out there that Ask Different should not have to duplicate the efforts of.
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Because Apple Thunderbolt Display reflects the whole room, I still use the matte 30" Apple Cinema Display. (Two cables are required for 2560 resolution due to some obscure technical constraints!)   MacBook Air (Mini DisplayPort + USB)  Apple Cinema Display 30" (DVI)   How do I connect the MacBook (USB-C) to the 30" screen with 2560 resolution?   MacBook (USB-C) (What goes here?) Apple Cinema Display 30" (DVI)
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Is it possible to use my Macbook Pro's display to receive inputs from other sources?
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Apple has just announced the new MacBook Airs, Mac mini, and Thunderbolt display. One of the features of the Thunderbolt display that caught my eye was its ability to daisy-chain two displays together from one Thunderbolt port (on a MacBook Pro).  I already have two 24" monitors and I don't feel like paying for two £900 displays. I worked out that all I need is a Thunderbolt hub/splitter so that I can plug the two cables that emerge into mini DisplayPort-to-DVI adapters.  Does anyone know of any Thunderbolt hubs or splitters? Or does anyone know of an alternative method?
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I've just purchased a Dell P2415Q monitor which I've connected up to my MacBook Pro (running OS X El Capitan). Everything works great in terms of the display, however I've noticed that it goes into power-saving mode (i.e. shuts off the display) as soon as I disconnect my MacBook Pro from its power source.  Given the battery is already charged up I don't want to keep it plugged in as I suspect it will damage the battery life if I keep it that way for a long time (and I do intend to take my MacBook Pro out and about for other uses).  Does anybody know how I can make the display work irrespective of whether my MacBook Pro is connected to it's power source or not?
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When I plug my Mac  into a DisplayPort monitor that has loudspeakers, the Mac's volume controls become disabled.    Is Apple assuming that if I have external speakers I am so much better using their own volume control that I have to be forced to do it?   That is annoying because the monitor's volume controls are buried in terrible menus accessed by terrible buttons on the back of the monitor.  Also, if I am inside an app where I can select the audio device and I select the Mac's internal speakers, the volume controls are STILL disabled.  Is there no way to control the volume of an app when an external speaker is connected even if the app is not using the external speaker?????  Some additional info: It's a Macbook Pro 13" 2018 version.  Using a Thunderbolt to Displayport cable, plugging in to a Dell monitor with speakers.    In another location I use the same cable to plug in to Dell monitors with Displayport but without built in speakers in the monitors.   At that location the volume controls remain active and they control the internal speaker in the laptop as they should.
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I am running Mac OS X (Version 10.10.5) on a MacBook Pro (13 Inch, Mid 2010) and want to arrange an external monitor of the same type to different positions.  First, let me explain my setup:   monitor at my office: DELL U2312HM (located above the MacBook's screen) monitor at home: DELL U2312HM (located left of the MacBook's screen)   As you can see, I am using different monitors of the same type (they have different serial numbers displayed in the System Overview window). However, they are located either above or left of the internal screen.  Since the only way I know to arrange an external monitor is draging the blue boxes in the monitor section of the system preferences, I need to do this every morning after connecting my monitor in the office and every evening after coming home. The monitor arrangement does not depend on the monitor's serial number but on the model since saving the arrangement of different models works as desired.  So is there a way, a hidden setting, a hidden setting accessible through the terminal or even a third-party app which enables different monitor arrangements for the same monitor model but based on the monitor's serial number as shown in the system overview?  The behavior which seems to be a system default is very annoying and does not feel very apple-like.
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I have a Macbook Pro mid-2014 running macOS Catalina 10.15.3  A few years ago, I dropped it, and broke the screen, then bought a replacement screen and repaired it myself.  Until today, I had no problems with it (except for a minor bug, which I asked about in ).  Today when I turned my mac on, the internal display does not turn on, but the two external monitors I use work fine.  The internal display is not shown in the display settings, nor in system information -> hardware.  What I've tried:   NVRAM reset disconnecting the battery from the motherboard, and all cables that are connected to the internal display, then reconnecting a full reinstall of the OS   I've also tried a plethora of other suggestions, but I don't think they are relevant.  After a bit of research, I suspect the "logic board" might be damaged, but I don't want to spend the money for replacement parts without being certain.     What can I do to diagnose this problem? Is there anything else I can try?
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I'm thinking about buying the new MacBook Pro with 4 USB-C ports.  I want to attach two screens, mouse and keyboard and ethernet to the MacBook Pro while using the fewest number of USB-C ports possible.  So what I need is an adaptor with:   two DP or HDMI ports (or one DP port with daisy chaining support) two or more USB ports an ethernet port   Best case would be a hub to which all devices are connected with a single connection to the MacBook Pro, including power supply. Worst case if attaching the MacBook Pro to the devices would require me to use all four of USB-C ports.  Given the answers up to far, I can tell that:   Daisy chaining might or might not work with the MacBook Pro (since it requires DP1.2 which is supported by the graphics chipset, but it's uncertain if it's supported by the MacBook Pro itself) I can attach the monitors with two cables as a last resort, leaving me with two ports for the remaining peripherals.   What I still don't know:   Would daisy chaining work with a hub or does it require the first monitor to be directly attached to the MacBook Pro? Does some kind of hub exist supporting attachment of all listed devices with a single upstream connection to the MacBook Pro?
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I have an Early 2015 13" MacBook Air with Intel HD Graphics 6000 1536 MB. I'm trying to figure out what its capabilities are in terms of connecting two external monitors.  First, if I just used the two external monitors and did not use the MacBook Air's built-in monitor, what is the maximum resolution I could run both external monitors at simultaneously? For example, could they both do 1080p resolution, or perhaps higher? And does it matter whether I use the built-in monitor? (I've scoured the internet looking for information about this but haven't found anything so far!)  Second, is there a device I can use just for connecting two external monitors via DVI, HDMI, or DisplayPort to the MacBook Air's Thunderbolt 2 port, other than an expensive general purpose Thunderbolt 2 dock like   ? I should add that I'm not interested in using devices that connect to a USB 3 port and use a DisplayLink driver.
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How do I setup  to support three monitors on a Radeon  card? Currently I can setup only two at once in any combination.  Monitors are connected as DVI-DVI-HDMI.
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Is it possible to use a MacBook Pro as a second monitor for my iMac? Both of them have a Thunderbolt port.  If not, is there any other way?
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I have been using a 24" monitor with my macbook pro early 2011 connected via a mini display port to DVI adaptor.  I recently received an HP Z30i 30" monitor.  When I connect to it with an mini display port to display port adaptor, although it displays at the monitors native 2560x1600 resolution, the mac is scaling the desktop display down so as to leave a 1cm or so black border around the desktop.  The mac reports using a resolution of 2560x1600 and the display reports this also.   This makes the display blurry as single pixels become sub pixels.   The display looks like the same effect as having "under scan" turned on when using an HDMI cable at 1080p.  I thought that maybe there was a hardware or display problem, but when I boot off a previous system partition from a different hard-drive using the same OS (10.8.5) release, the monitor set up works perfectly.  This proves the OS release, display and the hardware, so I'm thinking that there must be a preferences problem with my current setup.  Perhaps the under scan setting is somehow being applied to this display when it's not using HDMI?  I've tried deleting /Library/Preferences/com.apple.windowserver.plist, ~/Library/Preferences/ByHost/com.apple.windowserver.HostNumber.plist and rebooting but no results.   The scaling is applied before the login screen and logging in as a different user has the same problem.  Any ideas?  It's driving me nuts, I've got this nice 30" screen and I can't use it!
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I've seen many of the solutions on the topic, all posted in this site. But I haven't seen any of them mentioning Apple's adapter,   I have that, which was used to connect to my old MacBook Pro 2013.   Now, I'm assuming that all I need is to connect the Mini DisplayPort to an adapter, such as  (as mentioned in one of the posts) and the USB cable to a USB-C adaptor.   Is this correct?
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I need to create a multi-monitor setup for my desktop computer but I have no additional monitors with me right now, aside from my laptop. Is it possible to use my laptop screen as an external monitor?  Note that I am not trying to connect a monitor to my laptop, rather, I am trying to connect my laptop screen to a desktop video card (if this is possible).
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MacBook Pro (15-inch, 2016) with 2 USB-C to HDMI adapters. The setup works great if I start up in that configuration.   If I connect the adapters while the machine is running or simply sleeping, one of the monitors will never get a signal and stay in low power mode. The OS sees the monitor, it shows in the display arrangement settings and I can move the mouse into it, but until I restart, I can't see anything on it.  Once I have restarted I can let the machine sleep or whatever, and the display still works unless I disconnect the adapter. As soon as I do that a restart is required to use it again.   Using MacOS Sierra (10.12.4)  Using this adapter:
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Recently (less than one year ago) i bought an iMac 21,5". Now i would like to use it as secondary monitor for my laptop. (My laptop runs Windows 7).  Is it possible? (I found conflicting opinions on the web, even on the Apple forum).  What type of cable do I need? (I will appreciate also a link to the product on some online store: amazon, ebay etc.)  Thank you in advance.  UPDATE:  I tried air display... i'm not satisfied at all...  typical scenario: browser window on the main Windows laptop, dev tools/firebug on the secondary iMac screen. The mouse goes fast between the 2 screens (GOOD), but when i changed the selected tab nothing happens. I had to drag the dev tools window to the main screen to get an update of the selected tab.  My test is ended here.  I'm still waiting for other answers.   I will prefer an answer that suggest me what kind of cable i've to buy, and where i can find it on the web.