PC CHIPS MANUFACTURING, LTD. M726 Device Type Mainboard Processor Pentium II/ Celeron Processor Speed 233/266/300/333/350/366/400/450/500MHz Chip Set Unidentified Audio Chip Set 3D Sound Pro Maximum Onboard 768MB (SDRAM supported) Memory Cache 0/128/256/512KB (located on the CPU) BIOS AMI Dimensions 220mm x 220mm I/O Options 32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), ATX power connector, AGP slot, audio in - CD-ROMs (2) [Image] CONNECTIONS Purpose Location Purpose Location AGP slot AGP Sound and game J3 header ATX power connector ATX Speaker J4/pins 1, 3, 5, 7 Audio in - CD-ROM CD1 Power LED & J4/pins 2, 4, keylock 6, 8, 10 Audio in - CD-ROM CD2 Turbo LED J4/pins 13 & 14 Serial port 1 COM1 IDE interface J4/pins 15 & 16 LED Serial port 2 COM2 Reset switch J4/pins 17 & 18 Chassis fan power FANC Green PC LED J4/pins 19 & 20 CPU fan power FANP Digital audio in JP6 Floppy drive FDC1 Digital audio JP7 interface out IDE interface 1 IDE1 32-bit PCI slots PC1 - PC3 IDE interface 2 IDE2 Parallel port PRN1 ATX form card J2 connector USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation JP2 Pins 1 & 2 closed CMOS memory clear JP2 Pins 2 & 3 closed » Microphone type select standard JP3 Open Microphone type select special JP3 Closed » Onboard sound pro enabled JP8 Pins 2 & 3 closed Onboard sound pro disabled JP8 Pins 1 & 2 closed DIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 8 MB 1 M x 64 None None 16 MB 1 M x 64 1 M x 64 None 16 MB 2 M x 64 None None 24 MB 1 M x 64 1 M x 64 1 M x 64 32 MB 2 M x 64 2 M x 64 None 32 MB 4 M x 64 None None 40 MB 2 M x 64 2 M x 64 1 M x 64 48 MB 2 M x 64 2 M x 64 2 M x 64 64 MB 4 M x 64 4 M x 64 None 64 MB 8 M x 64 None None 80 MB 4 M x 64 4 M x 64 2 M x 64 96 MB 4 M x 64 4 M x 64 4 M x 64 128 MB 8 M x 64 8 M x 64 None 128 MB 16 M x 64 None None 130 MB 8 M x 64 8 M x 64 4 M x 64 192 MB 8 M x 64 8 M x 64 8 M x 64 256 MB 16 M x 64 16 M x 64 None 256 MB 32 M x 64 None None 320 MB 16 M x 64 16 M x 64 8 M x 64 384 MB 16 M x 64 16 M x 64 16 M x 64 512 MB 32 M x 64 32 M x 64 None 640 MB 32 M x 64 32 M x 64 16 M x 64 768 MB 32 M x 64 32 M x 64 32 M x 64 DIMM VOLTAGE CONFIGURATION Voltage JP1A JP1B 3.3v Pins 1 & 2 closed Pins 1 & 2 closed 5v Pins 2 & 3 closed Pins 2 & 3 closed CACHE CONFIGURATION Note: 256KB/512KB cache is located on the Pentium II CPU. 128KB cache is located on the Celeron 300A & 333 CPU. CPU MULTIPLIER SELECTION Multiplier JP4A JP4B JP4C JP4D 2x Closed Closed Closed Closed 2.5x Open Closed Closed Closed 3x Closed Closed Open Closed 3.5x Open Closed Open Closed 4x Closed Closed Closed Open 4.5x Open Closed Closed Open 5x Closed Closed Open Open 5.5x Open Closed Open Open 6x Closed Open Closed Closed 6.5x Open Open Closed Closed 7x Closed Open Open Closed 7.5x Open Open Open Closed 8x Closed Open Closed Open CPU FREQUENCY SELECTION Speed JP5 JP10 JP11 66MHz Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 closed closed closed 100MHz Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed 112MHz Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed 133MHz Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 closed closed closed