A:Answer Yes, 3 monitors can be connected with full HD resolution. The desktop PC has the following ports: 2x USB 3.2 Gen 2 Type-A, 4x USB 3.2 Gen 1 Type-A, 1x PS/2 keyboard (purple), 1x PS/2 mouse (green), 1x Mic-in, 1x Front Speaker Out (Line Out), 1x Line-in, 1x RJ45 Gigabit Ethernet, and 1x VGA(D-Sub)-Out.