CPU Supported Intel Pentium?III FCPGA 533EB-933EB/133MHz Intel Pentium?III FCPGA 500E-850E/100MHz Celeron? FCPGA 566-700MHz/66MHz Celeron? PPGA 300A-533MHz/66MHz Memory 3 x DIMM sockets max. 512MB (unbuffered) Supports PC100/ PC133 SDRAM PCI IDE Dual PIO mode 4 EIDE channels up to 4 IDE devices UltraDMA/100 transfer rate up to 100MB/sec Super I/O 2 x NS16C550A compatible UARTs 1 x SPP/ECP/EPP parallel port External Connectors 2 x USB, 1 x DB-9, 1 x DB-15, 1 x DB-25, 1 x PS/2 keyboard, 1 x PS/2 mouse, 1 x game/MIDI, 3 x Audio jacks Internal Connectors 2 x external USB, 1 x serial, 1x IrDA, 2 x IDE, 1x Floppy, 1 x ATX power, 3 x fan, 1 x WOL,1 x WOR, 1 x opened chassis alarm, 3 x internal audio Power Management ACPI and OS direct power management Wake-on event: RTC/USB Keyboard/Modem/LAN/Keyboard/Mouse Hardware Monitor System, processor temperature, voltage and fan speed Expansion Slots 1 AGP slot (Supports 4x/2x AGP or AIMM) 5 PCI slots 1 CNR slot Audio On Board AC`97 Audio codec with YAMAHA AP Video On Board Integrated 3D graphics with 133MHz DVMT 4MB display cache by AIMM card into the AGP slot (Optional) AGP 4X card into the AGP slot (Optional) Other features Suspend to RAM BIOS Award / 4Mbit Form Factors ATX, 4 layers 30.5cm x 22cm 12.05 inch. x 8.66 inch