Shuttle SG33G5M Deluxe. Maximum CPU clock speed supported: 3000 MHz, Processor socket: Socket 775, Processor front side buses supported: 800, 1066, 1333 MHz. Maximum internal memory: 4 GB, Memory slots: 2x DIMM. Graphic adapter: GMA 3100, Maximum graphics adapter memory: 384 MB. Audio output channels: 7.1, Audio system: Realtek ALC888DD. Networking features: Gigabit Ethernet