ANTEC, INC. MB5685 Processor CX M1/IBM/AM K5/AM K6/Pentium Processor Speed 75/90/100/120/125/133/150/166/200/233MHz Chip Set Intel Video Chip Set None Maximum Onboard 256MB (EDO supported) Memory Maximum Video None Memory Cache 256/512KB BIOS Award Dimensions 220mm x 220mm I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connector, USB connectors (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Floppy drive interface CN1 PS/2 mouse interface J99 Serial port 1 CN2 Chassis fan power JP1 Serial port 2 CN3 IR connector JP3 Parallel port CN4 Reset switch JP12 IDE interface 1 J6 Green PC connector JP15 IDE interface 2 J7 IDE interface LED JP22 USB connector J10 Green PC LED JP33 USB connector J11 32-bit PCI slots PC1 – PC4 Speaker J12 Cache slot SL1 Power LED & keylock J14 USER CONFIGURABLE SETTINGS Function Label Position Flash BIOS voltage select 12v JP19 Pins 1 & 2 closed Flash BIOS voltage select 5v JP19 Pins 2 & 3 closed » CMOS memory normal operation JP40 Pins 2 & 3 closed CMOS memory clear JP40 Pins 1 & 2 closed » Factory configured - do not JP42 Unidentified alter DRAM CONFIGURATION Size Bank 0 Bank 1 8MB (2) 1M x 36 None 16MB (2) 2M x 36 None 16MB (2) 1M x 36 (2) 1M x 36 24MB (2) 1M x 36 (2) 2M x 36 32MB (2) 4M x 36 None 32MB (2) 2M x 36 (2) 2M x 36 40MB (2) 4M x 36 (2) 1M x 36 48MB (2) 2M x 36 (2) 4M x 36 64MB (2) 8M x 36 None 64MB (2) 4M x 36 (2) 4M x 36 72MB (2) 1M x 36 (2) 8M x 36 80MB (2) 2M x 36 (2) 8M x 36 96MB (2) 4M x 36 (2) 8M x 36 128MB (2) 8M x 36 (2) 8M x 36 128MB (2) 16M x 36 None 136MB (2) 1M x 36 (2) 16M x 36 144MB (2) 2M x 36 (2) 16M x 36 160MB (2) 4M x 36 (2) 16M x 36 192MB (2) 8M x 36 (2) 16M x 36 256MB (2) 16M x 36 (2) 16M x 36 Note: Board accepts EDO memory. Do not install SIMMs & DIMMs at the same time. DIMM CONFIGURATION Size Bank 0 Bank 1 8MB (1) 1M x 64 None 16MB (1) 2M x 64 None 16MB (1) 1M x 64 (1) 1M x 64 24MB (1) 1M x 64 (1) 2M x 64 32MB (1) 4M x 64 None 32MB (1) 2M x 64 (1) 2M x 64 40MB (1) 1M x 64 (1) 4M x 64 48MB (1) 4M x 64 (1) 2M x 64 64MB (1) 8M x 64 None 64MB (1) 4M x 64 (1) 4M x 64 72MB (1) 1M x 64 (1) 8M x 64 80MB (1) 2M x 64 (1) 8M x 64 96MB (1) 4M x 64 (1) 8M x 64 128MB (1) 8M x 64 (1) 8M x 64 128MB (1) 16M x 64 None 136MB (1) 1M x 64 (1) 16M x 64 144MB (1) 2M x 64 (1) 16M x 64 160MB (1) 4M x 64 (1) 16M x 64 192MB (1) 8M x 64 (1) 16M x 64 256MB (1) 16M x 64 (1) 16M x 64 CACHE CONFIGURATION Size Bank 0 SL1 256KB (2) 32K x 32 Not installed 512KB (2) 32K x 32 256KB module installed CACHE JUMPER CONFIGURATION Size JP29 JP30 256KB Pins 1 & 2 closed Pins 2 & 3 closed 512KB Pins 2 & 3 closed Pins 1 & 2 closed CPU SPEED SELECTION (CYRIX) CPU speed Clock Multiplier JP23 JP24 JP36 speed 120MHz 50MHz 2x 1 & 2 2 & 3 1 & 2, 3 & 4, 5 & 6 133MHz 55MHz 2x 1 & 2 2 & 3 1 & 2, 5 & 6 150MHz 60MHz 2x 1 & 2 2 & 3 1 & 2, 3 & 4 166MHz 66MHz 2x 1 & 2 2 & 3 3 & 4, 5 & 6 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (IBM) CPU speed Clock Multiplier JP23 JP24 JP36 speed 120MHz 50MHz 2x 1 & 2 2 & 3 1 & 2, 3 & 4, 5 & 6 133MHz 55MHz 2x 1 & 2 2 & 3 1 & 2, 5 & 6 150MHz 60MHz 2x 1 & 2 2 & 3 1 & 2, 3 & 4 166MHz 66MHz 2x 1 & 2 2 & 3 3 & 4, 5 & 6 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AMD) CPU speed Clock Multiplier JP23 JP24 JP36 speed 75MHz 50MHz 1.5x 2 & 3 2 & 3 1 & 2, 3 & 4, 5 & 6 90MHz 60MHz 1.5x 2 & 3 2 & 3 1 & 2, 3 & 4 100MHz 66MHz 1.5x 2 & 3 2 & 3 3 & 4, 5 & 6 120MHz 60MHz 1.5x 2 & 3 2 & 3 1 & 2, 3 & 4 133MHz 66MHz 1.5x 2 & 3 2 & 3 3 & 4, 5 & 6 150MHz 60MHz 1.75x 1 & 2 1 & 2 1 & 2, 3 & 4 166MHz 66MHz 1.75x 1 & 2 1 & 2 3 & 4, 5 & 6 166MHz 66MHz 2.5x 1 & 2 1 & 2 3 & 4, 5 & 6 200MHz 66MHz 3x 2 & 3 1 & 2 3 & 4, 5 & 6 233MHz 66MHz 3.5x 2 & 3 2 & 3 3 & 4, 5 & 6 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL) CPU speed Clock Multiplier JP23 JP24 JP36 speed 75MHz 50MHz 1.5x 2 & 3 2 & 3 1 & 2, 3 & 4, 5 & 6 90MHz 60MHz 1.5x 2 & 3 2 & 3 1 & 2, 3 & 4 100MHz 66MHz 1.5x 2 & 3 2 & 3 3 & 4, 5 & 6 120MHz 60MHz 2x 1 & 2 2 & 3 1 & 2, 3 & 4 125MHz 50MHz 2.5x 1 & 2 1 & 2 1 & 2, 3 & 4, 5 & 6 133MHz 66MHz 2x 1 & 2 2 & 3 3 & 4, 5 & 6 150MHz 60MHz 2.5x 1 & 2 1 & 2 1 & 2, 3 & 4 166MHz 66MHz 2.5x 1 & 2 1 & 2 3 & 4, 5 & 6 200MHz 66MHz 3x 2 & 3 1 & 2 3 & 4, 5 & 6 233MHz 66MHz 3.5x 2 & 3 2 & 3 3 & 4, 5 & 6 Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION (SINGLE) Voltage J100 J101 J103 3.34v 3 & 4 1 & 3, 2 & 4 1 & 3 3.58v 3 & 4 1 & 3, 2 & 4 1 & 3, 2 & 4 Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION (DUAL) Voltage V core J100 J101 J103 3.3v 2.86v 3 & 4 3 & 5, 4 & Open 6 3.3v 2.97 3 & 4 3 & 5, 4 & 2 & 4 6 3.3v 3.15 3 & 4 3 & 5, 4 & 3 & 4 6 Note: Pins designated should be in the closed position. VOLTAGE FINE TUNE SELECTION Setting JP43 V core normal voltage Closed V core voltage increase by 2.5% Open