Processor 3.6GHz quad?core Intel Core i3RAM 8 GB DDR4 2400 MHzStorage Hard drive 1 TB (5400 rpm)OS MacOSDisplay 21.5-inch Retina 4K display, 4096 x 2304 resolution with support for one billion colors, 500 nits brightness, Wide color (P3)Graphics Radeon Pro 555X with 2GB of GDDR5 memoryPorts Four USB 3 ports (compatible with USB 2), Two Thunderbolt 3 (USB-C) ports (DisplayPort, Thunderbolt (up to 40Gb/s), USB 3.1 Gen 2 (up to 10Gb/s), Thunderbolt 2, HDMI, DVI, and VGA)Connectivity 802.11ac Wi-Fi +Bluetooth 4.2Product Dimensions (W x D x H) 45 x 52.8 x 17.5 cmProduct Weight out of box 5.6 kgIncludes Magic Keyboard, Magic Mouse 2, Power Cable, Lightning to USB Cable, 1 year warranty