ACER, INC. ACERALTOS 900 (M7), M7 Device Type Mainboard Processor Pentium Processor Speed 75/90/100/120/133/150/166MHz Chip Set Unidentified Video Chip Set Unidentified Maximum Onboard 192MB (EDO supported) Memory Maximum Video Memory 1MB Cache 256/512KB BIOS Acer Dimensions 330mm x 218mm I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interface, SCSI interface, Wide Ultra SCSI interface, parallel port, PS/2 mouse port, serial ports (2), VGA interface, cache slot [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 CN1 VGA interface CN13 Serial port 2 CN2 Power LED & keylock CN15 5v power CN3 IDE interface CN16 3.3v power CN4 Speaker CN17 Parallel port CN5 Reset/turbo switch CN18 Floppy drive CN6 Chassis fan power FA1 interface IDE interface LED CN7 Chassis fan power FA2 LED connector CN10 PS/2 mouse port MS1 SCSI-2 interface CN11 32-bit PCI slots PC1 - PC4 Wide SCSI interface CN12 Cache slot SL1 USER CONFIGURABLE SETTINGS Function Label Position » Factory configured - do not CN8 Unidentified alter » Factory configured - do not CN9 Unidentified alter » Termination switchable through JP2 Pins 2 & 3 closed SCSI select utility Termination enabled JP2 Pins 1 & 2 closed » SCSI select 16-bit JP6 Pins 1 & 2 closed SCSI select 8-bit JP6 Pins 2 & 3 closed » BIOS type select Acer JP8 Pins 1 & 2 closed BIOS type select OEM JP8 Pins 2 & 3 closed » Password disabled JP9 Pins 2 & 3 closed Password enabled JP9 Pins 1 & 2 closed » Buzzer enabled JP10 Pins 1 & 2 closed External speaker enabled JP10 Pins 2 & 3 closed » Front panel reset enabled JP11 Pins 1 & 2 closed Front panel reset disabled JP11 Pins 2 & 3 closed » Factory configured - do not JP12 Pins 2 & 3 closed alter SIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 8MB (2) 1M x 36 None None 16MB (2) 1M x 36 (2) 1M x 36 None 16MB (2) 2M x 36 None None 24MB (2) 2M x 36 (2) 1M x 36 None 24MB (2) 1M x 36 (2) 1M x 36 (2) 1M x 36 32MB (2) 4M x 36 None None 32MB (2) 2M x 36 (2) 2M x 36 None 40MB (2) 4M x 36 (2) 1M x 36 None 48MB (2) 4M x 36 (2) 2M x 36 None SIMM CONFIGURATION (CON'T) Size Bank 0 Bank 1 Bank 2 48MB (2) 4M x 36 (2) 1M x 36 (2) 1M x 36 56MB (2) 4M x 36 (2) 2M x 36 (2) 1M x 36 64MB (2) 8M x 36 None None 64MB (2) 4M x 36 (2) 4M x 36 None 80MB (2) 8M x 36 (2) 2M x 36 None 80MB (2) 8M x 36 (2) 1M x 36 (2) 1M x 36 88MB (2) 8M x 36 (2) 2M x 36 (2) 1M x 36 96MB (2) 8M x 36 (2) 4M x 36 None 96MB (2) 4M x 36 (2) 4M x 36 (2) 4M x 36 96MB (2) 8M x 36 (2) 2M x 36 (2) 2M x 36 104MB (2) 8M x 36 (2) 4M x 36 (2) 1M x 36 112MB (2) 8M x 36 (2) 4M x 36 (2) 2M x 36 128MB (2) 8M x 36 (2) 4M x 36 (2) 4M x 36 128MB (2) 16M x 36 None None 128MB (2) 8M x 36 (2) 8M x 36 None 136MB (2) 8M x 36 (2) 8M x 36 (2) 1M x 36 136MB (2) 16M x 36 (2) 1M x 36 None 144MB (2) 16M x 36 (2) 2M x 36 None 144MB (2) 16M x 36 (2) 1M x 36 (2) 1M x 36 152MB (2) 16M x 36 (2) 2M x 36 (2) 1M x 36 160MB (2) 16M x 36 (2) 4M x 36 None 160MB (2) 16M x 36 (2) 2M x 36 (2) 2M x 36 168MB (2) 16M x 36 (2) 4M x 36 (2) 1M x 36 176MB (2) 16M x 36 (2) 4M x 36 (2) 2M x 36 192MB (2) 16M x 36 (2) 8M x 36 None 192MB (2) 16M x 36 (2) 4M x 36 (2) 4M x 36 Note: Board accepts EDO memory. CACHE CONFIGURATION Size SL1 256KB 256KB module installed 512KB 512KB module installed CACHE JUMPER CONFIGURATION Size JP3 256KB Pins 1 & 2 closed 512KB Pins 2 & 3 closed VIDEO MEMORY CONFIGURATION Size Bank 0 Bank 1 512KB 512KB None 1MB 512KB 512KB CPU SPEED SELECTION CPU speed Clock speed Multiplier JP4 JP5 JP7 75MHz 50MHz 1.5x 2 & 3 2 & 3 1 & 2 90MHz 60MHz 1.5x 2 & 3 2 & 3 2 & 3 100MHz 66MHz 1.5x 2 & 3 2 & 3 3 & 4 120MHz 60MHz 2x 2 & 3 1 & 2 2 & 3 133MHz 66MHz 2x 2 & 3 1 & 2 3 & 4 150MHz 60MHz 2.5x 1 & 2 1 & 2 2 & 3 166MHz 66MHz 2.5x 1 & 2 1 & 2 3 & 4 Note: Pins designated should be in the closed position. CPU TYPE SELECTION Type JP13 JP14 JP15 JP16 P54C Open Closed Closed 1 & 2, 3 & 4, 8 & 9, 10 & 11 Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION Voltage JP1 VR Pins 1 & 2 closed » VRE Pins 2 & 3 closed