Operating System: macOS Chipset: N/A Processors: Intel 9th Generation i9 Memory Support: DDR4 4 DIMMS Slots Up to 64GB Display: Retina 5K display, 27-inch, 500 nits brightness, Wide color (P3) Resolution: 5120 x 2880 pixels Hard Drive: HDD or SSD Removable Media: N/A Graphics: Depending on model Audio: N/A Communications: 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector) I/O Ports: Four USB 3 ports, Two Thunderbolt 3 (USB-C), SDXC card slot, jack Power: N/A Dimensions: 51.6 x 65 x 20.3 cm Weight: 9.42 kg