iMac, Retina 5K Display, 32GB Memory, 3.12TB Storage Tested and working This is a configuration close to the full customization available at the time. - Model: iMac (Retina 5K, 27-inch, Mid 2015) - Processor: 3.3 GHz Quad-Core Intel Core i5 - Memory: 32 GB 1600 MHz DDR3 - Graphics: AMD Radeon R9 M290 2 GB - Storage: Fusion Drive 3.12 TB Included Accessories Magic Mouse (some scratches) USB-connected full-size numeric keypad *OS is Big Sur Please note: There is a scratch on the edge of the display, but it does not affect operation. The outer box is from a later model and not the 2015 model. *Also listed on other sites, so please understand that the item may become unavailable due to a sale on another site.