Shuttle SG31G2 Black (Glamor Series). Maximum CPU clock speed supported: 1333 MHz, Processor socket: Socket 775, Compatible processor series: Celeron, Pentium. Maximum internal memory: 4 GB. Graphic adapter: GMA X3100. Audio output channels: 7.1, Audio system: High Definition Audio. Networking features: Marvell 88E8056 Ethernet network controller