Specifications include, but are not limited to: 1. 27-inch iMac with Retina 5K Display; 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 Wired Apple Mouse (Must be ordered with Wired Keyboard) Wired Keyboard with numeric keypad (English) / User's Guide (English) (Must be ordered with Wired Mouse) 2. 21.5-inch iMac with Retina 4K Display; 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 Wired Apple Mouse (Must be ordered with Wired Keyboard) Wired Keyboard with numeric keypad (English) / User's Guide (English) (Must be ordered with Wired Mouse) 3.15-inch MacBook Pro - Silver; Z0UD 2.8GHz Quad-core Intel Core i7, Turbo Boost up to 3.8GHz Radeon Pro 555 with 2GB GDDR5 memory + Intel HD Graphics 630 16GB 2133MHz LPDDR3 SDRAM 512GB PCIe-based SSD Force Touch Trackpad Four Thunderbolt 3 ports Touch Bar and Touch ID Backlit Keyboard (English) / User's Guide (English)