Turn your PC or Mac into a second display

Use iMac as A Second Monitor.

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How to Turn an Old iMac into a 2nd Monitor - Cheaply!

How to use an iMAC as a 2nd monitor for Windows/Any Laptop.

Target Display Mode: Using an iMac as a monitor

How To Setup Dual Monitors On Mac - Full Guide

Use ANY Mac as a monitor, not just Target Display!

How I connected my Mac and PC to ONE monitor with ONE Keyboard and Mouse!

old imac as main monitor or external monitor

PC to Mac Screen Extend in 5 mins. Without Installing Windows on Mac!!

How to Setup Dual Monitors on a Mac

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Connect two laptops via HDMI to get a second screen for your primary laptop (Windows or Mac)

Use an iMac as an External Monitor