Specifications for the Main Board Chipset Operating System OS Free Dos Intel® H370 Processor 8th Generation Intel® Core™ i5-8400 Processor Speed 2.8 / 4.00 GHz Processor Cache 8M Storage Capacity 1 TB Storage Technology Memory RAM Size 4 GB Memory Type DDR4 2400MHz SATA Speed (RPM) 7200 Display & Graphic Controller Video Input & Connectivity with Intel UHD Graphics 630 SATA Super Multi Light Scribe DVD Writer Extras Optical Drive Lenovo Multimedia Keyboard with Optical Mouse Ports 4-USB 3.0 (front and back) 4. Two front and two rear USB 2.0 ports HDMI VGA Audio Line Out Serial RJ-45 Display Port After-Sales Service Guarantee A one-year worldwide guarantee