M TECHNOLOGY, INC. R541 MIG Device Type Mainboard Processor CX 6X86/IBM 6X86/CX 6X86L/IBM 6X86L/CX 6X86MX/AM K5/ AM K6/Pentium/Pentium MMX Processor Speed 90/100/120/133/150/166/180/200/233/266MHz Chip Set Intel Video Chip Set None Maximum Onboard 128MB (EDO & SDRAM supported) Memory Maximum Video None Memory Cache 512KB BIOS AMI Dimensions 280mm x 220mm I/O Options 32-bit PCI slots (4), floppy drive interface, 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 Power LED & keylock C1 IDE interface 2 CN5 Speaker C2 IDE interface 1 CN6 IDE interface LED C3 PS/2 mouse interface CN7 Reset switch C4 IR connector IR1 Serial port 2 CN1 32-bit PCI slots PC1 – PC4 Serial port 1 CN2 USB connector 1 USB1 Parallel port CN3 USB connector 2 USB2 Floppy drive interface CN4 USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation JP18 Pins 1 & 2 closed CMOS memory clear JP18 Pins 2 & 3 closed DIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 8MB (1) 1M x 64 None None 16MB (1) 2M x 64 None None 16MB (1) 1M x 64 (1) 1M x 64 None 24MB (1) 2M x 64 (1) 1M x 64 None 24MB (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 32MB (1) 4M x 64 None None 32MB (1) 2M x 64 (1) 1M x 64 (1) 1M x 64 32MB (1) 2M x 64 (1) 2M x 64 None 40MB (1) 4M x 64 (1) 1M x 64 None 40MB (1) 2M x 64 (1) 2M x 64 (1) 1M x 64 48MB (1) 4M x 64 (1) 1M x 64 (1) 1M x 64 48MB (1) 4M x 64 (1) 2M x 64 None 48MB (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 56MB (1) 4M x 64 (1) 2M x 64 (1) 1M x 64 64MB (1) 8M x 64 None None 64MB (1) 4M x 64 (1) 2M x 64 (1) 2M x 64 64MB (1) 4M x 64 (1) 4M x 64 None 72MB (1) 8M x 64 (1) 1M x 64 None 72MB (1) 4M x 64 (1) 4M x 64 (1) 1M x 64 80MB (1) 8M x 64 (1) 1M x 64 (1) 1M x 64 80MB (1) 8M x 64 (1) 2M x 64 None 80MB (1) 4M x 64 (1) 4M x 64 (1) 2M x 64 DIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 88MB (1) 8M x 64 (1) 2M x 64 (1) 1M x 64 96MB (1) 8M x 64 (1) 2M x 64 (1) 2M x 64 96MB (1) 8M x 64 (1) 4M x 64 None 96MB (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 104MB (1) 8M x 64 (1) 4M x 64 (1) 1M x 64 112MB (1) 8M x 64 (1) 4M x 64 (1) 2M x 64 128MB (1) 8M x 64 (1) 8M x 64 None Note: Board accepts EDO & SDRAM memory. DIMM VOLTAGE CONFIGURATION Voltage JP1 3.3v Pins 3 & 5, 4 & 6 closed 5v Pins 1 & 3, 2 & 4 closed CACHE CONFIGURATION Size Bank 0 512KB (2) 64K x 32 CPU SPEED SELECTION (CX 6X86) CPU Clock Multiplier JP2 JP3 JP4 JP7 JP8 JP9 speed speed 133MHz 55MHz 2x Closed Closed Open Open Open Closed 150MHz 60MHz 2x Closed Open Open Closed Open Closed 166MHz 66MHz 2x Open Open Open Open Open Closed 200MHz 75MHz 2x Open Closed Open Open Open Closed CPU SPEED SELECTION (IBM 6X86) CPU Clock Multiplier JP2 JP3 JP4 JP7 JP8 JP9 speed speed 133MHz 55MHz 2x Closed Closed Open Open Open Closed 150MHz 60MHz 2x Closed Open Open Closed Open Closed 166MHz 66MHz 2x Open Open Open Open Open Closed 200MHz 75MHz 2x Open Closed Open Open Open Closed CPU SPEED SELECTION (CX 6X86L) CPU Clock Multiplier JP2 JP3 JP4 JP7 JP8 JP9 speed speed 133MHz 55MHz 2x Closed Closed Open Open Open Closed 150MHz 60MHz 2x Closed Open Open Closed Open Closed 166MHz 66MHz 2x Open Open Open Open Open Closed 200MHz 75MHz 2x Open Closed Open Open Open Closed CPU SPEED SELECTION (IBM 6X86L) CPU Clock Multiplier JP2 JP3 JP4 JP7 JP8 JP9 speed speed 133MHz 55MHz 2x Closed Closed Open Open Open Closed 150MHz 60MHz 2x Closed Open Open Closed Open Closed 166MHz 66MHz 2x Open Open Open Open Open Closed 200MHz 75MHz 2x Open Closed Open Open Open Closed CPU SPEED SELECTION (CX 6X86MX) CPU Clock Multiplier JP2 JP3 JP4 JP7 JP8 JP9 speed speed 166MHz 60MHz 2.5x Closed Open Open Closed Closed Closed 200MHz 66MHz 2.5x Open Open Open Open Closed Closed 233MHz 66MHz 3x Open Open Open Open Closed Open 233MHz 75MHz 2.5x Open Closed Open Open Closed Closed 266MHz 66MHz 3.5x Open Open Open Open Open Open 266MHz 75MHz 3x Open Closed Open Open Closed Open CPU SPEED SELECTION (AM K5) CPU Clock Multiplier JP2 JP3 JP4 JP7 JP8 JP9 speed speed 90MHz 60MHz 1.5x Closed Open Open Closed Open Open 100MHz 66MHz 1.5x Open Open Open Open Open Open 166MHz 66MHz 2.5x Open Open Open Open Closed Closed CPU SPEED SELECTION (AM K6) CPU Clock Multiplier JP2 JP3 JP4 JP7 JP8 JP9 speed speed 166MHz 66MHz 2.5x Open Open Open Open Closed Closed 200MHz 66MHz 3x Open Open Open Open Closed Open 233MHz 66MHz 3.5x Open Open Open Open Open Open CPU SPEED SELECTION (INTEL) CPU Clock Multiplier JP2 JP3 JP4 JP7 JP8 JP9 speed speed 90MHz 60MHz 1.5x Closed Open Open Closed Open Open 100MHz 66MHz 1.5x Open Open Open Open Open Open 120MHz 60MHz 2x Closed Open Open Closed Open Closed 133MHz 66MHz 2x Open Open Open Open Open Closed 150MHz 60MHz 2.5x Closed Open Open Closed Closed Closed 166MHz 66MHz 2.5x Open Open Open Open Closed Closed 180MHz 60MHz 3x Closed Open Open Closed Closed Open 200MHz 66MHz 3x Open Open Open Open Closed Open CPU SPEED SELECTION (INTEL MMX) CPU Clock Multiplier JP2 JP3 JP4 JP7 JP8 JP9 speed speed 166MHz 66MHz 2.5x Open Open Open Open Closed Closed 200MHz 66MHz 3x Open Open Open Open Closed Open 233MHz 66MHz 3.5x Open Open Open Open Open Open CPU VOLTAGE SELECTION (SINGLE) Voltage JP6 JP12 3.4v Pins 1 & 2, 3 & 4, 5 & Pins 3 & 4 closed 6 closed 3.5v Pins 1 & 2, 3 & 4, 5 & Pins 1 & 2 closed 6 closed CPU VOLTAGE SELECTION (DUAL) Voltage V core JP6 JP12 3.4v 2.5v Open Pins 11 & 12 closed 3.4v 2.8v Open Pins 9 & 10 closed 3.4v 2.9v Open Pins 7 & 8 closed 3.4v 3.2v Open Pins 5 & 6 closed BIOS SELECTION Type JP16 JP17 1M/5v Pins 1 & 2 closed Pins 2 & 3 closed 2M/5v Pins 1 & 2 closed Pins 1 & 2 closed