Supermicro X9SCL-B. Supported memory clock speeds: 800, 1066, 1333 MHz, Maximum internal memory: 32 GB, Supported DIMM module capacities: 1GB, 2GB, 4GB, 8GB. RAID levels: 0, 1, 5, 10. PCI Express slots version: 2.0. BIOS type: AMI, BIOS memory size: 4 MB, ACPI version: 2.0. Ethernet interface type: Gigabit