ANTEC, INC. MB6831 Device Type Mainboard Processor Pentium II Processor Speed 233/266/300/333MHz Chip Set Intel 440LX Video Chip Set None Maximum Onboard Memory 512MB (EDO & SDRAM supported) Maximum Video Memory None Cache 256/512KB (located on Pentium II CPU) BIOS Award Dimensions 305mm x 240mm I/O Options 32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector, AGP slot [Image] CONNECTIONS Purpose Location Purpose Location AGP slot AGP Reset switch J32 ATX power connector ATX USB connector 1 J33 IDE interface 1 J13 USB connector 2 J34 IDE interface 2 J14 IR connector JP4 Parallel port J19 Speaker JP24 Serial port 1 J20 CPU fan power JP28 Serial port 2 J21 Chassis fan power JP29 Floppy drive interface J22 AGP fan power JP43 PS/2 mouse port J24 32-bit PCI slots PC1 – PC4 Power LED & keylock J27 Soft off power supply S1 IDE interface LED J30 USER CONFIGURABLE SETTINGS Function Label Position » Factory configured - do not alter J16 Pins 2 & 3 closed » Factory configured - do not alter J42 Open » Factory configured - do not alter JP2 Pins 2 & 3 closed » CMOS memory normal operation JP19 Pins 2 & 3 closed CMOS memory clear JP19 Pins 1 & 2 closed Any hard drive installed JP32 Pins 1 & 2 closed Seagate 5v hard drive installed JP32 Pins 2 & 3 closed DIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 8MB (1) 1M x 64 None None None 16MB (1) 2M x 64 None None None 16MB (1) 1M x 64 (1) 1M x 64 None None 24MB (1) 2M x 64 (1) 1M x 64 None None 24MB (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 None 32MB (1) 4M x 64 None None None 32MB (1) 2M x 64 (1) 2M x 64 None None 32MB (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 40MB (1) 4M x 64 (1) 1M x 64 None None 48MB (1) 4M x 64 (1) 2M x 64 None None DIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 48MB (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 None 64MB (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 64MB (1) 8M x 64 None None None 64MB (1) 4M x 64 (1) 4M x 64 None None 72MB (1) 8M x 64 (1) 1M x 64 None None 80MB (1) 8M x 64 (1) 2M x 64 None None 96MB (1) 8M x 64 (1) 4M x 64 None None 96MB (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 None 128MB (1) 16M x 64 None None None 128MB (1) 8M x 64 (1) 8M x 64 None None 128MB (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 136MB (1) 16M x 64 (1) 1M x 64 None None 144MB (1) 16M x 64 (1) 2M x 64 None None 176MB (1) 16M x 64 (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 192MB (1) 16M x 64 (1) 8M x 64 None None 192MB (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 None 256MB (1) 16M x 64 (1) 16M x 64 None None 256MB (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 272MB (1) 16M x 64 (1) 16M x 64 (1) 1M x 64 (1) 1M x 64 288MB (1) 16M x 64 (1) 16M x 64 (1) 2M x 64 (1) 2M x 64 320MB (1) 16M x 64 (1) 16M x 64 (1) 4M x 64 (1) 4M x 64 384MB (1) 16M x 64 (1) 16M x 64 (1) 16M x 64 None 512MB (1) 16M x 64 (1) 16M x 64 (1) 16M x 64 (1) 16M x 64 Note: Board accepts EDO & SDRAM memory. CACHE CONFIGURATION Note: 256KB/512KB cache is located on the Pentium II CPU. CPU SPEED SELECTION CPU Clock Multiplier JP5 JP6 JP7 JP8 JP35 speed speed 233MHz 66MHz 3.5x Closed Open Closed Open Open 266MHz 66MHz 4x Open Closed Closed Closed Open 300MHz 66MHz 4.5x Open Closed Closed Open Open 333MHz 66MHz 5x Open Open Closed Closed Open