System BoardSystem Board1-11.1 FeaturesThe M9A is a dual-processor system board that supports the IntelP54C and P55C CPUs. The board contains an exclusive slot for theCPU board that carries the 321-pin zero-insertion force (ZIF) CPUsockets plus the embedded 512-KB pipeline burst second-levelcache.This high-performance 64-bit system board utilizes both the EISA andthe PCI local bus architecture. Two EISA, four PCI bus slots, and oneEISA/PCI shared slot reside on the board to allow installation of eithermaster or slave devices.The system board has four DRAM banks composed of eight 72-pinSIMM sockets that accommodate both fast-page mode and EDO(extended data output) SIMMs. The sockets support a total of 512-MB system memory using 64-MB SIMMs.A 50-pin Fast SCSI-II interface and a 68-pin Wide SCSI interfacecome with the system board to connect SCSI devices. Standardexternal I/O interfaces include two 9-pin serial ports, one parallel port,a video port, and keyboard and mouse ports.The system board supports two optional features that allow betterserver management, the ASM Pro and the remote diagnosticmanagement (RDM). The ASM Pro detects system problems, suchas CPU thermal condition, 5V/3.3V detection, and PCI bus utilizationcalculation. The RDM allows execution of a diagnostic program froma remote station to fix the detected problems or to reboot the system.