M TECHNOLOGY, INC. R552 PENTIUM PCI/ISA Processor CX M1/AM K5/Pentium Processor Speed 75/90/100/120/133/150/166/180/200MHz Chip Set Intel Video Chip Set None Maximum Onboard 128MB (EDO supported) Memory Maximum Video None Memory Cache 256/512KB BIOS Award Dimensions 304mm x 244mm I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), cache slot, USB connectors (2), ATX power connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location ATX power connector ATX Speaker J2 Serial port 2 CN1 Reset switch J3 Parallel port CN2 Green PC connector J4 PS/2 mouse port CN3 IDE interface LED J5 Serial port 1 CN4 32-bit PCI slots PC1 - PC4 Floppy drive interface CN5 Cache slot SL1 IDE interface 1 CN6 USB connector 1 USB1 IDE interface 2 CN7 USB connector 2 USB2 Power LED & keylock J1 USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation JP14 Open CMOS memory clear JP14 Closed Monitor type select CGA JP15 Closed Monitor type select JP15 Open monochrome/EGA/VGA » PS/2 mouse enabled JP16 Pins 1 & 2 closed PS/2 mouse disabled JP16 Pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 4MB (2) 512K x 36 None 6MB (2) 512K x 36 (2) 256K x 36 8MB (2) 1M x 36 None 8MB (2) 512K x 36 (2) 512K x 36 12MB (2) 1M x 36 (2) 512K x 36 16MB (2) 2M x 36 None 16MB (2) 1M x 36 (2) 1M x 36 20MB (2) 2M x 36 (2) 512K x 36 24MB (2) 2M x 36 (2) 1M x 36 32MB (2) 4M x 36 None 32MB (2) 2M x 36 (2) 2M x 36 36MB (2) 4M x 36 (2) 512K x 36 40MB (2) 4M x 36 (2) 1M x 36 48MB (2) 4M x 36 (2) 2M x 36 64MB (2) 8M x 36 None 64MB (2) 4M x 36 (2) 4M x 36 68MB (2) 8M x 36 (2) 512K x 36 72MB (2) 8M x 36 (2) 1M x 36 80MB (2) 8M x 36 (2) 2M x 36 96MB (2) 8M x 36 (2) 4M x 36 128MB (2) 8M x 36 (2) 8M x 36 Note: Board accepts EDO memory. If these configurations are used, DIMM sockets must be empty. Board also accepts x 32 SIMMs. DIMM CONFIGURATION Size Bank 2 Bank 3 8MB (1) 1M x 64 None 16MB (1) 2M x 64 None 16MB (1) 1M x 64 (1) 1M x 64 24MB (1) 2M x 64 (1) 1M x 64 32MB (1) 4M x 64 None 32MB (1) 2M x 64 (1) 2M x 64 40MB (1) 4M x 64 (1) 1M 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) 8M x 64 (1) 1M x 64 80MB (1) 8M x 64 (1) 2M x 64 96MB (1) 8M x 64 (1) 4M x 64 128MB (1) 8M x 64 (1) 8M x 64 Note: If these configurations are used, DIMM sockets must be empty. DIMM VOLTAGE CONFIGURATION Voltage JP10 3.3v Pins 3 & 5, 4 & 6, closed 5v Pins 1 & 3, 2 & 4 closed CACHE CONFIGURATION Size Bank 0 SL1 TAG 256KB (2) 32K x 32 Not installed (1) 32K x 8 512KB (2) 32K x 32 256KB module (1) 32K x 8 installed 512KB (2) 64K x 32 256KB module (1) 32K x 8 installed CPU SPEED SELECTION (CYRIX) CPU Clock Multiplier JP6 JP7 JP8 JP500 JP501 JP502 speed speed 120MHz 50MHz 2x Open Closed Open Open Open Open 133MHz 55MHz 2x Open Closed Open Closed Open Open 150MHz 60MHz 2x Closed Closed Open Open Open Closed 166MHz 66MHz 2x Open Closed Open Open Closed Open CPU SPEED SELECTION (AMD) CPU Clock Multiplier JP6 JP7 JP8 JP500 JP501 JP502 speed speed 75MHz 50MHz 1.5x Open Open Open Open Open Open 90MHz 60MHz 1.5x Closed Open Open Open Open Closed 100MHz 66MHz 1.5x Open Open Open Open Closed Open CPU SPEED SELECTION (INTEL) CPU Clock Multiplier JP6 JP7 JP8 JP500 JP501 JP502 speed speed 75MHz 50MHz 1.5x Open Open Open Open Open Open 90MHz 60MHz 1.5x Closed Open Open Open Open Closed 100MHz 66MHz 1.5x Open Open Open Open Closed Open 120MHz 60MHz 2x Closed Closed Open Open Open Closed 133MHz 66MHz 2x Open Closed Open Open Closed Open 150MHz 60MHz 2.5x Closed Closed Closed Open Open Closed 166MHz 66MHz 2.5x Open Closed Closed Open Closed Open 180MHz 60MHz 3x Closed Open Closed Open Open Closed 200MHz 66MHz 3x Open Open Closed Open Closed Open CPU VOLTAGE SELECTION (SINGLE POWER CPU) CPU type Voltage JP5 JP9 CX M1/AM K5/P54C 3.3v 1 & 2, 3 & 4, 1 & 2, 3 & 4 5 & 6 CX M1/AM K5/P54C 3.45v 1 & 2, 3 & 4, 1 & 2 5 & 6 CX M1/AM K5/P54C 3.5v 1 & 2, 3 & 4, Open 5 & 6 Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION(DUAL POWER CPU) CPU type Voltage 1 Voltage 2 JP5 JP9 JP19 P55C 3.3v 2.5v Open 1 & 2, 3 1 & 2, 3 & 4 & 4 P55C 3.45v 2.7v Open 1 & 2 1 & 2 P55C 3.5v 2.8v Open Open Open Note: Pins designated should be in the closed position. FLASH BIOS SELECTION Voltage JP17 JP18 None Pins 1 & 2 closed Pins 1 & 2 closed 5v Pins 1 & 2 closed Pins 2 & 3 closed 12v Pins 2 & 3 closed Pins 2 & 3 closed