CPU support LGA775 Intel Pentium 4 processors with 800/533MHz front-side bus Expansion slots 1 PCI Express X16 1 32-bit/33MHz PCI Memory 2 184-pin DIMM sockets Maximum of 4GB of DDR333/400 SDRAM Storage I/O Floppy disk 1 channels ATA/100 4 ports Serial ATA 150 via ICH6R south bridge with RAID 0, 1, 0+1, and Matrix RAID support Audio 8-channel audio via ICH6R integrated audio and ALC880 codec BIOS AwardBIOS Bus speeds CPU: 100-355MHz in 1MHz increments DRAM: auto, 333, 400, 533MHz Voltages CPU: 0.8250-1.45V in 0.0025V increments DDR: auto, 2.7-2.9V in 0.1V increments AGP: auto, 1.6-1.8V in 0.1V increments Monitoring Voltage, fan status, and temperature monitoring Fan speed control CPU and system