Acer Aspire AZ1-621-UR22 21.5-Inch Full HD All-in-One Touchscreen Desktop (Discontinued by Manufacturer) Intel Pentium N3530 2.16 GHz Processor (2 MB Cache) 4 GB DDR3 RAM 500 GB 5400 rpm Hard Drive 21.5-Inch Touchscreen, Intel HD Graphics Windows 8.1