Biostar P4M80-M4. Supported memory types: DDR DIMM, Maximum internal memory: 2 GB. Processor family: Intel, Processor socket: Socket 478, Processors compatible: Intel Pentium 4/Celeron D/Celeron. Audio system: Realtek ALC655. Width: 202 mm, Depth: 244 mm. Maximum graphic adapter memory: 64 MB