Apple iMac 21.5" All-in-One Desktop Computer i3 3.07GHz 4GB Ram 500GB Mac OS High Sierra w/ Keyboard & Mouse - GRADE B
Late 2009 iMac - Should You Upgrade to High Sierra? | All Apple All Day
Amazon.com: Bootable USB Stick for macOS X High Sierra 10.13 - Full OS Install, Reinstall, Recovery and Upgrade
macOS High Sierra - Wikipedia
macOS High Sierra: The MacStories Review - MacStories
Use your iMac as a display with target display mode - Apple Support
macOS 10.13 High Sierra: The Ars Technica review | Ars Technica
2009 iMac 27"- Refurbished - MacTek - Computer & Phone Repair & IT Support
macOS High Sierra On A 2009 Imac Core 2 Duo? A Retro Adventure :o) - YouTube
How to Install macOS High Sierra on an Unsupported Mac - YouTube
macOS High Sierra - Wikipedia
Hard Drive for iMac Late 2009-2011 ONLY 500GB, Preloaded with High Sierra 10.13 | eBay
MacOS High Sierra Compatible Macs List | OSXDaily
MacOS High Sierra – Worry Free Upgrade For Your Mac
IMac 21.5-inch Late 2009 - Mac OS High Sierra 10.13.6, Intel Core 2 Duo, 4 GB DDR3 RAM, 500 GB HDD, Nvidia GeForce 9400 256 MB VRAM
For all of the ten people that care, I installed High Sierra On a mid 2009 MacBook Pro : r/mac
