Convert a 5K iMac into an External Display | Michael Schmitt | Mobile & Web Developer
Developer shows off a custom DIY Apple 5K Display with an iMac design - 9to5Mac
5K universal hd HDR Freesync 60hz LCD controller board kit R9A18 Für iMac A1419 LM270QQ1 LM270QQ2 LCD bildschirm test fahrer bord - AliExpress
Pardon me but the new display made the old iMac a steal. Despite the speakers, camera, ports and extra 100 nits brightness. You get a fully working Mac for $200 extra, heck... :
Converting a 5K iMac into an External 5K Display - Oh My Pizza Blog