MICRO-STAR INTERNATIONAL CO., LTD. MS-6121 Device Type Mainboard Processor Pentium II Processor Speed 233/266/300/333/350/400/450MHz Chip Set Intel 440BX Maximum Onboard 768MB (EDO & SDRAM supported) Memory Audio Chip Set Yamaha Cache 256/512KB (located on Pentium II CPU) BIOS Award Dimensions 207mm x 254mm I/O Options 32-bit PCI slots (2), Ethernet 10BaseT connector, floppy drive interface, game/MIDI port, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector, line in, line out, microphone in, audio in – CD-ROM, SB-link connector, wake on LAN connector [Image] CONNECTIONS Purpose Location Purpose Location CPU fan power C1 Ethernet 10BaseT CN7 connector Parallel port CN1 Microphone in CN8 Serial port 1 CN2 Line in CN9 Serial port 2 CN3 Line out CN10 PS/2 mouse port CN4 Audio in – CD-ROM J2 Game/MIDI port CN5 SB-link connector J4 USB connector CN6 Temperature sensor JSOR USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation JBAT Pins 1 & 2 closed CMOS memory clear JBAT Pins 2 & 3 closed MIC terminal select 3 JMIC Pins 1 & 2 closed MIC terminal select 2 JMIC Pins 2 & 3 closed Power on mode select boot up by JP2 Closed switch Power on mode select immediate JP2 Open boot up DIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 8MB (1) 1M x 64 None None 16MB (1) 1M x 64 (1) 1M x 64 None 16MB (1) 2M x 64 None None 24MB (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 32MB (1) 2M x 64 (1) 2M x 64 None 32MB (1) 4M x 64 None None 48MB (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 64MB (1) 4M x 64 (1) 4M x 64 None 64MB (1) 8M x 64 None None 96MB (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 128MB (1) 8M x 64 (1) 8M x 64 None 128MB (1) 16M x 64 None None 164MB (1) 16M x 64 (1) 1M x 64 None 144MB (1) 16M x 64 (1) 1M x 64 (1) 1M x 64 144MB (1) 16M x 64 (1) 2M x 64 None 160MB (1) 16M x 64 (1) 2M x 64 (1) 2M x 64 160MB (1) 16M x 64 (1) 4M x 64 None 192MB (1) 16M x 64 (1) 4M x 64 (1) 4M x 64 192MB (1) 16M x 64 (1) 8M x 64 None 192MB (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 256MB (1) 16M x 64 (1) 8M x 64 (1) 8M x 64 DIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 256MB (1) 16M x 64 (1) 16M x 64 None 256MB (1) 32M x 64 None None 264MB (1) 32M x 64 (1) 1M x 64 None 272MB (1) 32M x 64 (1) 1M x 64 (1) 1M x 64 272MB (1) 32M x 64 (1) 2M x 64 None 288MB (1) 32M x 64 (1) 2M x 64 (1) 2M x 64 288MB (1) 32M x 64 (1) 4M x 64 None 320MB (1) 32M x 64 (1) 4M x 64 (1) 4M x 64 320MB (1) 32M x 64 (1) 8M x 64 None 384MB (1) 32M x 64 (1) 8M x 64 (1) 8M x 64 384MB (1) 32M x 64 (1) 16M x 64 None 384MB (1) 16M x 64 (1) 16M x 64 (1) 16M x 64 512MB (1) 32M x 64 (1) 16M x 64 (1) 16M x 64 512MB (1) 32M x 64 (1) 32M x 64 None 768MB (1) 32M x 64 (1) 32M x 64 (1) 32M x 64 Note: Board accepts SDRAM memory. CACHE CONFIGURATION Note: 256KB/512KB cache is located on the Pentium II CPU. CPU SPEED SELECTION CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 speed speed 200MHz 66MHz 3x On On Off On 233MHz 66MHz 3.5x On Off Off On 266MHz 66MHz 4x On On On Off 300MHz 66MHz 4.5x On Off On Off 333MHz 66MHz 5x On On Off Off 350MHz 100MHz 3.5x On Off Off On 400MHz 100MHz 4x On On On Off 450MHz 100MHz 4.5x On Off On Off [Image] CONNECTIONS Purpose Location Purpose Location System fan power C1 Audio in – CD-ROM J6 Chassis fan power C2 Audio in – CD-ROM J7 IDE interface 1 CN1 Soft off power JSW1 supply IDE interface 2 CN2 32-bit PCI slots PC1 – PC2 Floppy drive CN3 Power LED & U1/pins 1 – 5 interface keylock USB connector CN4 Speaker U1/pins 7 - 10 IR connector IR1 IDE interface LED U1/pins 12 & 24 Green PC LED J1 Turbo LED U1/pins 14 & 15 Green PC connector J2 Green PC connector U1/pins 17 & 18 Wake on modem J3 Reset switch U1/pins 21 & connector 22 Chassis intrusion J4 Wake on LAN WOL connector connector Note: The ATX power connector is located on the backside of the riser card. USER CONFIGURABLE SETTINGS Function Label Position » Factory configured - do not J9 Unidentified alter