ECS 671T-M V1.0. Supported memory types: DDR2 667/533/400, Maximum internal memory: 4 GB. Processor family: Intel, Processor socket: Socket 775, Processors compatible: Core 2 Duo / Pentium D / Pentium 4 / Celeron D. Audio system: Realtek ALC660, Audio output channels: 5.1. Width: 244 mm, Depth: 220 mm. Controller (2nd) interface type: Ultra DMA133/100/66, Controller interface type: Serial ATA2