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PCB board size: 30.5 cm x 18.00 cm PCB layer: 4 layers Slot 1 socket Support Intel® Pentium® II CPU at 66 MHz &100 MHz or Pentium®III 100MHz F.S.B.(chipset VT82C693) or Pentium®III 133MHz F.S.B (chipset VT82C693A) Memory DIMM: 3 of 168-pin 3.3V DIMM Expansion Slot : 2x ISA, 4 x PCI slots, 1x A.G.P. slot and 1 x AMR( allows MR card only) Sound : on-board AC-97 sound already Chipset VIA VT82C693/693A VIA VT82C686A BIOS: flash EEPROM for BIOS Award® full PnP (Plug & Play) BIOS Note : This main board has sound on board function, user still can install one M.R.(Modem Riser) card into AMR slot. MR card must be set as "secondary" on MR card I/O function 2 x PCI IDE devices 1 x FDC, 2 x serial ports(16550 fast com) 1 x parallel port device /EPP/ECP/SPP 2 x USB connector (4 port, 2 port optional) IrDA (infrared) connector Audio function Green function: Complied with APM (Advanced Power Management) ATX form factor The ATX form factor has been defined to address four major areas of improvement required of today’s predominant form factors. Enhance PC ease-of-use with all built-in I/O connector Better support for current and future I/O Reduce total system cost Better support for future processor technology ATX is an evolution of the popular Baby-AT form factor. By mounting the power supply on its side, the processor is relocated away from the expansion slots, and the longer side of the board is used to host more on-board I/O connector; this placing of I/O on the board reduces cabling inside the box, lower costs, and improves reliability and ease-of use. A flexible I/O panel allows ATX to support all current and future I/O requirements. The ATX power supply will directly suck the air out of chassis that will save the cost of a secondary fan in the system. System cost is further reduced by the higher integration of PC components onto the system board itself, saving materials, inventory holding, and assembly cost. Power supply regulation Onboard switching voltage that supports appropriate power to the CPU and future upgraded CPUs. Over-current protection circuit With AIC 1569CS AH10 (protect CPU from accident short circuit), if system current is over-loaded, the system will break down to protect direct damage of the main board. Electrical--- Typical power supply Below is reference for ATX case requirement on power supply. Current Voltage Tolerance 230W 250W 300W +5V 5% 23A 25A 30A +3.3V 5% 14A 14A 14A +12V 10% 9A 10A 12A -5V 5% 0.5A 0.5A 0.5A -12V 5% 0.8A 0.8A 0.8A +5VSB 5% 1A 1A 1A WOL (Wake up on LAN) function requirement: Power supply should offer at lest 750mA to the signal "5VSB"to support WOL function. Special features Wake up on LAN (ATX power supply is required) Modem ring on Windows 95/98 power off (ATX power supply is required) AMR Audio on board

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