Biostar G31M+. Memory channels support: dual, Supported memory clock speeds: 533, 667, 800, 1066 MHz, Maximum internal memory: 4 GB. Processor family: Intel, Compatible processor series: Celeron, Core 2 Duo, Core 2 Quad, Pentium 4, Pentium Dual-Core, Processor socket: Socket 775. Audio output channels: 5.1, Audio system: HD. Width: 235 mm, Depth: 179 mm. LAN controller: Realtek RTL8103E(L), Ethernet interface type: Fast