Intel® Core™ i5-4590 processor 4 Cores / 4 Threads, 3.30 GHz, up to 3.7 GHz, 6 MB,// 8 GB DDR3/ HDD SATA III, 7,200 rpm, 1,000 GB, 3.5-inch/ 2 X 3.5-inch internal bays// 1 X 3.5-inch external bays, 2 X 5.25-inch external bays/Intel® HD Graphics 4400// DVD SuperMulti SATA//1 x Ethernet (RJ-45)//8 x USB 2.0 total / 1xAudio: line-in,1xAudio: line-out;1x Front audio: microphone;1xFront audio: headphone/6xUSB 2.0;2xUSB 3.0; 2 x USB2.0 front; 4 x USB rear; 2 x USB 2.0/2x USB 3.0 ; USB internal 2 x 2.0//1xPCI-Express 2.0 x16, 2 x PCI-Express x1,// 1 x VGA//1x DVI-D// Intel HD Graphics  // Country kit EU+ // 2 x Mouse / Keyboard (PS/2), 1 x Audio: line-in / microphone//NO OS// 280 W power supply efficiency (at 230V; 20% / 50% / 100% load) : 83% / 86% / 85%// No OS /