Can iMac 21.5 inch Late 2015 be used as a monitor?

You cannot. The only iMacs with Target Display Mode support are the 3rd and 4th gen iMacs roughly between the years 2009 (with the 27-inch only at the beginning, later expanding the feature to the 21.5-inch when Thunderbolt was added) to 2014, excluding the 5K iMac released in late 2014.
Takedown request   |   View complete answer on forums.macrumors.com


Can I use my 21.5 Late 2015 iMac as a monitor?

Answer: A: Answer: A: Target Display Mode is history and that will not work. The Late 2015 iMac can not be used as a display, plus no late model Mac can use a qualifying iMac as a display.
Takedown request   |   View complete answer on origin-discussions2-us-dr-prz.apple.com


Can you use an 2015 iMac as a monitor?

You can use more than one iMac as a display, if each iMac is using a Thunderbolt cable to connect directly to a Thunderbolt port on the other Mac (not the other iMac). Press Command-F2 on the keyboard of the iMac. You should now see the desktop of the other Mac. To exit target display mode, press Command-F2 again.
Takedown request   |   View complete answer on support.apple.com


How can I use my iMac 21.5 as an external monitor?

Setup Guide
  1. Step 1: Connecting the Cables. Turn off your iMac and PC, then plug the cable into the Thunderbolt, HDMI, or Display port on your PC. ...
  2. Step 2: Trigger Target Display Mode. Turn on both the iMac and the PC, then hold Cmd + F2 or Cmd + Fn + F2 on the iMac keyboard to trigger Target Display Mode.
Takedown request   |   View complete answer on alphr.com


Can an iMac be used just as a monitor?

You can use more than one iMac as a display, if each iMac is using a Thunderbolt cable to connect directly to a Thunderbolt port on the other Mac (not the other iMac). Press Command-F2 on the keyboard of the iMac. You should now see the desktop of the other Mac. To exit target display mode, press Command-F2 again.
Takedown request   |   View complete answer on support.apple.com


Use an iMac as an External Monitor



Why was Target display mode removed?

What is Apple's Target Display Mode? Target Display Mode was an extremely popular feature that allowed older macs to be used as external monitors for newer macs. However, Apple killed off Target Display Mode a few years back because it required too many Thunderbolt ports on newer model macs.
Takedown request   |   View complete answer on astropad.com


How do I know if my iMac has Target display Mode?

On your iMac, go to Keyboard System Preferences and see if "Use all F1, F2, etc. keys as standard function keys" is checked. If it is, instead of Command-F2, press Command-Fn-F2 to enter Target Display Mode.
Takedown request   |   View complete answer on fonepaw.com


Does iMac have HDMI input?

Because the Apple iMac integrates the computer and monitor into one device, it does not offer conventional video input ports such as DVI or HDMI.
Takedown request   |   View complete answer on yourbusiness.azcentral.com


Can you plug a PC laptop into an iMac?

Switch off your PC and your iMac. Plug your iMac with either the Thunderbolt cable or the Mini Display Port cable varying on their features. Make sure that they are firmly and safely connected. Make sure that all devices are connected and made use of properly.
Takedown request   |   View complete answer on technewstoday.com


Can I use 2015 iMac as Mac mini monitor?

Nope, the Late 2015 iMac does not support being used as a display.
Takedown request   |   View complete answer on discussions.apple.com


Can a retina iMac be used as a monitor?

You're not limited to Apple's desktops or laptops, either; Luna Display now supports adding a 4K or 5K screen to your PC as a second display. That means you could attach the 24-inch iMac with a 4.5K (4480×2520) resolution or a 27-inch iMac with a 5K (5120×2880) resolution to your Windows or Mac PC.
Takedown request   |   View complete answer on arstechnica.com


Can I use another Mac as a second monitor?

With AirPlay Display, you can co-opt any nearby Mac or iPad screen and use it as a second or main display. The feature is both amazingly useful and a bit frustrating. “Target Display Mode was a system function in macOS that allowed an iMac to serve as a display for another Mac.
Takedown request   |   View complete answer on lifewire.com


How do I put my iMac in Target display Mode?

To use your iMac as a display in Target Display Mode, connect it to another Mac using the correct cable (see System Requirements below). Then press Command-F2 on the keyboard connected to your iMac. When you're done, press Command-F2 again.
Takedown request   |   View complete answer on applerepairstation.co.uk


What can I do with my old iMac?

If your old iMac doesn't work anymore, you can still recycle it. Electronics can't go in your city recycling bin, but many companies accept old electronics for recycling. You can drop off your old iMac at a local Staples or Best Buy. You can also return old Apple products to Apple for recycling.
Takedown request   |   View complete answer on lifewire.com


How can I use my iMac as a monitor for HDMI?

How to use iMac as a monitor for PCs:
  1. Turn off your PC and iMac.
  2. Plug the end of a cable into the Thunderbolt port or the Mini DisplayPort of the iMac, and then plug the other end of the cable into the Thunderbolt or Display port on your PC. ...
  3. Connect the PC with the adapter using an HDMI cable. ...
  4. Turn on your iMac and PC.
Takedown request   |   View complete answer on easeus.com


How do I display HDMI on my iMac?

If your Mac has an HDMI port, you can connect directly to HDMI with an HDMI cable. If your Mac has USB-C ports, you can connect to HDMI with an adapter, like the Apple USB-C Digital AV Multiport Adapter. If your Mac has Mini DisplayPort, you can connect to HDMI with a Mini DisplayPort to HDMI adapter or cable.
Takedown request   |   View complete answer on support.apple.com


Does target display work with Big Sur?

Sorry, it is NOT possible to use Target Display Mode with these Macs for the following reasons: Macs newer than 2019 are not supported. macOS Big Sur on the output Mac is not supported. macOS Catalina on the Target Mac is not supported.
Takedown request   |   View complete answer on discussions.apple.com


What cables do I need for Target display Mode?

DisplayPort iMacs require a DisplayPort cable, though they can work with either DisplayPort or Thunderbolt Macs. Only get a Thunderbolt cable if you're going to connect two ThunderBolt-equipped computers together, it won't work for anything else.
Takedown request   |   View complete answer on eshop.macsales.com


Can you use iMac as a monitor m1?

No. +1 No. If you need an external display then it is time to buy one.
Takedown request   |   View complete answer on discussions.apple.com


Does macOS Catalina support Target display Mode?

Since today it runs Catalina (10.15. 7) and still supports TDM.
Takedown request   |   View complete answer on discussions.apple.com


Why won't my Mac detect a second monitor?

Go to System Preferences > Displays, click Scaled and hold down the Option key to show and select the Detect Displays button. Go to System Preferences > Displays and check the resolution and brightness settings. Also, check the display cable connections, and update adapter software if applicable.
Takedown request   |   View complete answer on lifewire.com


What is a secondary display?

Secondary displays are an effective tool to drive visibility and incremental sales, especially in impulse categories. Placed in high-traffic areas or cross-merchandised in adjacency categories, secondary displays drive awareness for both new or seasonal products and established brands.
Takedown request   |   View complete answer on hl-display.com


Can I use iMac as display for Mac Studio?

No. A pre-Retina iMac operating in Target Display Mode cannot be a display for any Mac from 2020 or newer. A Retina-class iMac (from late 2014, and newer) does not support Target Display Mode.
Takedown request   |   View complete answer on discussions.apple.com