Specifications include, but are not limited to: 1 27-inch iMac; Z0TR 3.8GHz quad-core Intel Core i5, Turbo Boost up to 4.2GHz 8GB 2400MHz DDR4 SDRAM - 2x4GB 512GB SSD Radeon Pro 580 with 8GB video memory Apple Magic Mouse 2 Magic Keyboard (English) 2 27-inch iMac; MNE92LL/A 3.4GHz Quad-core Intel Core i5, Turbo Boost up to 3.8GHz 8GB 2400MHz DDR4 SDRAM – 2x4GB 1TB Fusion Drive Radeon Pro 570 with 4GB video memory Apple Magic Mouse 2 Magic Keyboard (English) 3 27-inch iMac Pro; MQ2Y2LL/A 3.2GHz 8-core Intel Xeon W processor, Turbo Boost up to 4.2GHz 32GB 2666MHzHz DDR4 ECC memory 1TB SSD Radeon Pro Vega 56 with 8GB of HBM2 memory Magic Mouse 2 – Space Grey English Magic Keyboard with Numeric Keypad with English Print – Space Grey 4 21-inch iMac; MNDY2LL/A 3.0GHz quad-core Intel Core i5, Turbo Boost up to 3.5GHz 8GB 2400MHz DDR4 1TB Serial ATA Drive @ 5400 rpm Radeon Pro 555 with 2GB video memory Apple Magic Mouse 2 Magic Keyboard (English).