![Troubleshooting tips for using an old iMac as an external display for a Thunderbolt 3 Mac | Macworld Troubleshooting tips for using an old iMac as an external display for a Thunderbolt 3 Mac | Macworld](https://www.macworld.com/wp-content/uploads/2023/01/new_2017_imac_two_side-100724913-orig.jpg?quality=50&strip=all&w=1024)
Troubleshooting tips for using an old iMac as an external display for a Thunderbolt 3 Mac | Macworld
![Retina 5K iMac Will Not Act as External Display, Standalone Apple 5K Display Unlikely Soon - MacRumors Retina 5K iMac Will Not Act as External Display, Standalone Apple 5K Display Unlikely Soon - MacRumors](https://images.macrumors.com/t/CgJkFavftePzDJ2-mp3Gi4FCi7g=/1600x1200/smart/article-new/2014/10/imac_retina_waterfall.jpg)
Retina 5K iMac Will Not Act as External Display, Standalone Apple 5K Display Unlikely Soon - MacRumors
![Apple iMac with 5K Retina display (27-inch) review: Apple's 5K iMac impresses expert eyes (review) - CNET Apple iMac with 5K Retina display (27-inch) review: Apple's 5K iMac impresses expert eyes (review) - CNET](https://www.cnet.com/a/img/resize/da8ce9fb3831d58d94c4435a678bcf78326a1ec6/hub/2014/10/21/79079187-489a-433d-8a29-59e8b91ff8a7/river-apple-imac-retina-5k-display-7861-008.jpg?auto=webp&width=1200)
Apple iMac with 5K Retina display (27-inch) review: Apple's 5K iMac impresses expert eyes (review) - CNET
![27-inch iMac with Retina 5K display: 3.3GHz 6-core 10th-generation Intel Core i5 processor, 512GB - Central Tech Store 27-inch iMac with Retina 5K display: 3.3GHz 6-core 10th-generation Intel Core i5 processor, 512GB - Central Tech Store](https://cdn.shoplightspeed.com/shops/638486/files/37031444/156x230x2/apple-27-inch-imac-with-retina-5k-display-33ghz-6.jpg)
27-inch iMac with Retina 5K display: 3.3GHz 6-core 10th-generation Intel Core i5 processor, 512GB - Central Tech Store
![Review: Apple's 2017 27" 5K iMac impresses with truly powerful desktop-class graphics | AppleInsider Review: Apple's 2017 27" 5K iMac impresses with truly powerful desktop-class graphics | AppleInsider](https://photos5.appleinsider.com/gallery/21709-25531-170622-5K-7-l.jpg)
Review: Apple's 2017 27" 5K iMac impresses with truly powerful desktop-class graphics | AppleInsider
![Apple iMac 27" Desktop Core i5-6600 Quad-Core 3.30GHz 8GB RAM 2TB HDD & 128GB SSD Mojave Late 2015 Retina 5K Display w/ Keyboard & Mouse Apple iMac 27" Desktop Core i5-6600 Quad-Core 3.30GHz 8GB RAM 2TB HDD & 128GB SSD Mojave Late 2015 Retina 5K Display w/ Keyboard & Mouse](https://cdn11.bigcommerce.com/s-w5trgcbv/images/stencil/1280x1280/products/7511/58170/Apple_iMac_27_Center__90220.1644957182.jpg?c=2)
Apple iMac 27" Desktop Core i5-6600 Quad-Core 3.30GHz 8GB RAM 2TB HDD & 128GB SSD Mojave Late 2015 Retina 5K Display w/ Keyboard & Mouse
![Apple Studio Display hands on: An attractive but overpriced 27-inch 5K monitor for Mac-based pros | ZDNET Apple Studio Display hands on: An attractive but overpriced 27-inch 5K monitor for Mac-based pros | ZDNET](https://www.zdnet.com/a/img/resize/edf66bc2f3cb01fe0a5cc622486c7914e4e113c0/2022/03/29/d4e947c2-9f43-4928-ad93-7427b2a6dd95/apple-studio-display-thumb.jpg?auto=webp&fit=crop&height=1200&width=1200)
Apple Studio Display hands on: An attractive but overpriced 27-inch 5K monitor for Mac-based pros | ZDNET
![Buy Apple iMAC 27", (MXWU2B/A), Intel Core i5, 512GB SSD, 8GB RAM, 4GB AM Radeon Pro 5300, 27", 5K Retina display, maOS Online-Pcplanet Buy Apple iMAC 27", (MXWU2B/A), Intel Core i5, 512GB SSD, 8GB RAM, 4GB AM Radeon Pro 5300, 27", 5K Retina display, maOS Online-Pcplanet](https://www.pcplanet.com/image/cache/catalog/Product%20Photos/image-800x800.jpg)