Acer Intel Pentium Processor G645 3MB Intel Smart Cache 2.90GHZ Desktop PC DT.VF6AA.001;VX2611G-UG645X Intel apple_a4|#A4 Processor 2.9 GHz ( cache) 4GB DDR3 500 GB 7200 rpm Hard Drive Windows 8 Professional CPU:INTEL PENTIUM PROCESSOR G645(3MB Intel Smart Cache, 2.90GHZ) Memory:4GB(4/0)DDR3 / MAX:8GB Storage:500GB SATA HD;7200RPM;DVD-RW drive Graphics: INTEGRATED INTEL HD GRAPHICS System: WINS 7 Pro installed with WINS 8 Pro license and media Power Supply:220W Drive bays: one 3.5-Inch, one 5.25-Inch MISC:RJ-45 LAN,10xUSB 2.0(4*FRONT/6*REAR)