If you want to try an active HDMI to DP converter then be extra careful to purchase the correct device if you are searching for an HDMI to DP converter there will almost always be DP to HDMI converters in your search results. Active HDMI to DP converters are relatively expensive and relatively rare. (Lastly, there is a chance an HDMI port will work by using an active HDMI to DP converter, but I have never tried it. I believe that volume can be controlled by the host PC, but I haven’t done it in awhile so I’m no longer sure. In order to adjust brightness a program like must be used. Notes: The iMacs backlight cannot be controlled while using Target Display Mode. PCs can only use Target Display Mode with compatible iMacs by following those two rules. I use Karabiner-Elements and a normal keyboard. To use a non-Apple keyboard then a virtual keyboard program must be used. Also, an Apple keyboard must be used to type Cmd + F2 or Cmd + Fn + F2 to enter into Target Display Mode. I use a Displayport to Mini Displayport cable.Ģ. It absolutely will not work with video from an HDMI port or a DVI port and a passive cable converter. The host PC must be outputting the video signal through a Displayport (or Mini DP). There are some strict rules to make this work:ġ. PCs only work with iMacs that have Mini Displayport only video ports.) (Important!! If your iMac has a Mini Displayport/Thunderbolt port then you can only connect other Macs. The iMac is running macOS High Sierra 10.13.6, which is the last possible macOS version for the machine.

Mindy, et al., I have a late 2009 27″ iMac that I use as a monitor for PCs that are running Windows or Ubuntu Linux. For example, if you are mirroring to a 5K iMac, the resolution of 2560 x 1440 should work fine, but this depends on the exact iMac and PC model you are using. You might need to go into Display Settings and change the resolution so that it appears the same on both machines. Click on the iMac, and your PC should show both displays. The PC will look for available displays, and your iMac should appear in the results. Select the Project tile and choose Connect to a wireless display.

Move onto the PC and access the Action Center from the bottom-right corner. It is not necessary to Require PIN for pairing, so you can keep the option off.Īt the bottom of the window, make sure you give your computer a name, especially if you have multiple machines at your home. Select First time only under Ask to project to this PC.

Under Projecting to this PC, click on the first drop-down menu and choose Available everywhere. Go into Windows Settings on your iMac, choose System, and select Projecting to this PC from the menu bar on the left. Make sure your iMac is on and running Windows, then connect to the same network as your PC via Ethernet or WiFi.

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