SOYO COMPUTER CO., LTD. SY-5EHM Device Type Mainboard Processor CX 6X86/CX 6X86L/CX 686MX/AM K5/AM K6/ AM K6-2/Pentium/Pentium MMX Processor Speed 90/100/120/133/150/166/180/200/233/250/266Hz Chip Set VIA MVP3 Video Chip Set None Maximum Onboard 128MB (EDO & SDRAM supported) Memory Maximum Video None Memory Cache 512/1024KB BIOS Award Dimensions 254mm x 218mm I/O Options 32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connector, USB connector, ATX power connector, AGP slot, wake on LAN connector [Image] CONNECTIONS Purpose Location Purpose Location AGP slot AGP Reset switch J25A ATX power connector ATX Soft off power supply J25B Parallel port CN1 Turbo LED J25C Serial port 1 CN2 IDE interface LED J25D Serial port 2 CN3 Power LED & keylock J25E IDE interface 1 CN4 Speaker J25F IDE interface 2 CN5 CPU fan power JP12 Floppy drive interface CN6 Wake on LAN connector JP44 PS/2 mouse interface CN7 32-bit PCI slots PC1 – PC3 IR connector IR1 USB connector USB USER CONFIGURABLE SETTINGS Function Label Position CPU voltage select auto JP4 Closed CPU voltage select manual JP4 Open » CMOS memory normal operation JP5 Pins 1 & 2 closed CMOS memory clear JP5 Pins 2 & 3 closed CPU burst mode select interleave JP22 Pins 1 & 2 closed CPU burst mode select linear JP22 Pins 2 & 3 closed SIMM CONFIGURATION Size Bank 0 8MB (2) 1M x 36 16MB (2) 2M x 36 32MB (2) 4M x 36 64MB (2) 8M x 36 Note: Board accepts EDO memory. DIMM CONFIGURATION Size Bank 1 Bank 2 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 DIMM CONFIGURATION (CON’T) Size Bank 1 Bank 2 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) 16M x 64 None 128MB (1) 8M x 64 (1) 8M x 64 136MB (1) 16M x 64 (1) 1M x 64 144MB (1) 16M x 64 (1) 2M x 64 160MB (1) 16M x 64 (1) 4M x 64 192MB (1) 16M x 64 (1) 8M x 64 256MB (1) 16M x 64 (1) 16M x 64 Note: Board accepts EDO & SDRAM memory. DIMM VOLTAGE CONFIGURATION Voltage JP37 » 3.3v Pins 1 & 3, 2 & 4 closed 5v Pins 3 & 5, 4 & 6 closed DIMM FREQUENCY CONFIGURATION Frequency JP9 JP10 » SDRAM = CPU Pins 2 & 3 closed Pins 1 & 2 closed SDRAM = AGP Pins 1 & 2 closed Pins 2 & 3 closed CACHE CONFIGURATION Size Bank 0 TAG 512KB (1) 64K x 64 (1) 16K x 8 1MB (2) 64K x 64 (1) 16K x 8 CPU SPEED SELECTION (CX 6X86) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 150MHz 60MHz 2x On Off Off On Off Off 166MHz 66MHz 2x On Off Off Off Off Off 200MHz 75MHz 2x On Off Off Off On Off CPU SPEED SELECTION (CX 6X86L) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 150MHz 60MHz 2x On Off Off On Off Off 166MHz 66MHz 2x On Off Off Off Off Off 200MHz 75MHz 2x On Off Off Off On Off CPU SPEED SELECTION (CX 6X86MX) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 166MHz 60MHz 2.5x On On Off On Off Off 200MHz 66MHz 2.5x On On Off On Off Off 200MHz 75MHz 2x On Off Off Off On Off 233MHz 75MHz 2.5x On On Off Off On Off 233MHz 66MHz 3x Off On Off On Off Off 266MHz 83MHz 2.5x On On Off On On Off CPU SPEED SELECTION (AM K5) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 90MHz 60MHz 1.5x Off Off Off On Off Off 100MHz 66MHz 1.5x Off Off Off Off Off Off 120MHz 60MHz 1.5x Off Off Off On Off Off 133MHz 66MHz 2x On Off Off Off Off Off 166MHz 66MHz 2.5x On On Off Off Off Off CPU SPEED SELECTION (AM K6) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 166MHz 66MHz 2.5x On On Off Off Off Off 180MHz 66MHz 3x Off On Off On Off Off 200MHz 66MHz 3x Off On Off Off Off Off 233MHz 66MHz 3.5x Off Off Off Off Off Off CPU SPEED SELECTION (AM K6 2) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 250MHz 100MHz 2.5x On On Off Off Off On CPU SPEED SELECTION (INTEL) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 90MHz 60MHz 1.5x Off Off Off On Off Off 100MHz 66MHz 1.5x Off Off Off Off Off Off 120MHz 60MHz 2x On Off Off On Off Off 133MHz 66MHz 2x On Off Off Off Off Off 150MHz 60MHz 2.5x On On Off On Off Off 166MHz 66MHz 2.5x On On Off Off Off Off 180MHz 66MHz 3x Off On Off On Off Off 200MHz 66MHz 3x Off On Off Off Off Off CPU SPEED SELECTION (INTEL MMX) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 166MHz 66MHz 2.5x On On Off Off Off Off 180MHz 66MHz 3x Off On Off On Off Off 200MHz 66MHz 3x Off On Off Off Off Off 233MHz 66MHz 3.5x Off Off Off Off Off Off CPU VOLTAGE SELECTION Voltage JP30 2.0v Open 2.1v Pins 5 & 6 closed 2.2v Pins 3 & 4 closed 2.3v Pins 3 & 4, 5 & 6 closed 2.4v Pins 7 & 8 closed 2.5v Pins 5 & 6, 7 & 8 closed 2.6v Pins 3 & 4, 7 & 8 closed 2.7v Pins 3 & 4, 5 & 6, 7 & 8 closed 2.8v Pins 1 & 2, 11 & 12 closed 2.9v Pins 1 & 2, 5 & 6 closed 3.0v Pins 1 & 2, 3 & 4 closed 3.1v Pins 1 & 2, 3 & 4, 5 & 6 closed 3.2v Pins 1 & 2, 7 & 8 closed 3.3v Pins 1 & 2, 9 & 10 closed 3.4v Pins 1 & 2, 3 & 4, 7 & 8 closed 3.5v Pins 1 & 2, 11 & 12 closed POWER SUPPLY SELECTION Type JP2 JP6 » AT Pins 2 & 3 closed Pins 2 & 3 closed ATX Pins 1 & 2 closed Pins 1 & 2 closed HOST BUS FREQUENCY SELECTION CPU host bus AGP host PCI hose JP7 JP8 bus bus » 66MHz 66MHz 33MHz Pins 2 & 3 Open closed 100MHz 66MHz 33MHz Pins 1 & 2 Pins 2 & 3 closed closed