This is a used 19.5 inch Acer aspire z1 612 ,an all in one desktop computer with keyboard and a mouse. It has 8GB RAM 512GB hard drive, has the latest update of Windows 10, Intel celeron and also it has an optical drive for C-D drives. Has 3 usb ports ,HDMI,audio jack , card reader rear ,a LAN port and 2 built-in Stereo speaker.