Acer Veriton Z DQ.VNAAA.002;VZ4820G-I5650Z 23.8-Inch Desktop Windows 7 Professional (available through downgrade rights from Windows 10 Pro) Intel CoreTM i5-6500 processor Quad-core 3.20 GHz Memory: 8GB (4/0) DDR4 SDRAM, up to 16GB (2*8GB) DDR4 SDRAM Storage: 500GB SATA hard drive, 5400RPM; Super-Multi drive and with optional touchscreens. Graphics: Integrated Intel HD Graphics 530 (350MHz base freq, 1.10GHz max)