Apple iMac 27-inch (Late 2013) – Intel Core i5 Quad-Core All-in-One Desktop, Immersive Large Display, macOS Experience (US intel)
at Amazon Marketplace
New Fit For Apple IMAC 27'' A1419 Fan cooler mg90321v2-c052-s9a DC12V 18W APPLE:610-00252 All-in-One PC AIO AIOs GPU cpu cooling
Ausla iMac 27 Inch Monitor Bag, 26.2 X 18.3 in with Handle | Computer Monitor Sleeve, Water Proof Nylon And Velvet, Adjustable Buckle And Pockets, For Travel Storage
OWC - In-line Digital Thermal Sensor Cable for upgrading the Hard Drive in 27-inch & 21.5-inch iMac (2011) models
at Amazon.co.uk
OWC - DIY Bundle In-line Digital Thermal Sensor for Hard Drive Upgrade for 27" Apple iMac Late 2012 to Mid 2019 Models
