System bus:800 mhz Cache memory:1 mb level 2 Graphics: Intel graphics media accelerator 950 (gma950) Video memory:224 mb shared Audio:8-channel (7.1) Speakers: Amplified stereo Modem:56k itu v.92 ready fax/modem (rj-11) Network interface: Intel pro/100 ve ethernet lan (rj-45) Total expansion bays: (4) 3-1/2, (2) 5-1/4 Available expansion bays: (2) 3-1/2 Total expansion slots:1 pci-e x16,1 pci-e x1,2 pci Available expansion slots:1 pci-e x16,1 pci-e x1.1 pci Ports:7 usb 2.0 (2 front,1 in media manager,4 back),1 vga,3 ieee 1394 firewire,1 parallel,2 ps/2,7 audio (2 front/5 back),1 spdif optical audio Keyboard: Elite multimedia Mouse: Usb optical 2-button wheel Dimensions: Cpu measures approx.17.9l x 7.3w x 15.4h Weight:23.5 pounds - cpu