ACER, INC. AP57 Device Type Mainboard Processor CX 6X86/AM K5/AM K6/Pentium/Pentium MMX Processor Speed 75/90/100/120/133/150/166/200/233MHz Chip Set SIS Video Chip Set None Maximum Onboard 256MB (EDO supported) Memory Maximum Video None Memory Cache 256/512KB BIOS Award Dimensions 250mm 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 connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Power LED & C1/pins 1 – 5 Parallel port CN3 keylock Speaker C1/pins 7 – Floppy drive CN4 10 interface Green PC LED C1/pins 12 & IDE interface 2 CN5 13 Green PC connector C1/pins 15 – IDE interface 1 CN6 17 Reset switch C1/pins 19 & PS/2 mouse CN7 20 interface IDE interface LED C2 IR connector IR1 CPU fan power C3 32-bit PCI slots PC1 – PC4 Serial port 1 CN1 USB connector USB Serial port 2 CN2 USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation JP14 Pins 1 & 2 closed CMOS memory clear JP14 Pins 2 & 3 closed » On board I/O enabled JP18 Pins 1 & 2 closed On board I/O disabled JP18 Pins 2 & 3 closed » PS/2 mouse enabled JP20 Pins 1 & 2 closed PS/2 mouse disabled JP20 Pins 2 & 3 closed CPU burst mode select linear JP22 Pins 1 & 2 closed CPU burst mode select toggle JP22 Pins 2 & 3 closed SIMM 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) 2M x 36 (2) 1M 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) 4M x 36 (2) 2M x 36 64MB (2) 8M x 36 None 64MB (2) 4M x 36 (2) 4M 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 SIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 128MB (2) 8M x 36 (2) 8M x 36 128MB (2) 16M x 36 None 136MB (2) 16M x 36 (2) 1M x 36 144MB (2) 16M x 36 (2) 2M x 36 160MB (2) 16M x 36 (2) 4M x 36 192MB (2) 16M x 36 (2) 8M x 36 256MB (2) 16M x 36 (2) 16M x 36 Note: Board accepts EDO memory. CACHE CONFIGURATION Size Bank 0 256KB (2) 32K x 32 512KB (2) 64K x 32 CPU SPEED SELECTION (CX 6X86) CPU Clock Multiplier JP1 JP2 JP3 JP4 JP13 speed speed 120MHz 50MHz 2x 1 & 1 & 2 & 2 & 1 & 2, 2 2 3 3 5 & 6 150MHz 60MHz 2x 2 & 1 & 1 & 2 & 1 & 2, 3 2 2 3 3 & 4 166MHz 66MHz 2x 2 & 1 & 2 & 1 & 3 & 4 3 2 3 2 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AM K5) CPU Clock Multiplier JP1 JP2 JP3 JP4 JP13 speed speed 90MHz 60MHz 1.5x 1 & 1 & 1 & 2 & 1 & 2, 2 2 2 3 3 & 4 100MHz 66MHz 1.5x 1 & 1 & 2 & 1 & 3 & 4 2 2 3 2 120MHz 60MHz 1.5x 1 & 1 & 1 & 2 & 1 & 2, 2 2 2 3 3 & 4 133MHz 66MHz 1.5x 1 & 1 & 2 & 1 & 3 & 4 2 2 3 2 166MHz 66MHz 1.75x 2 & 2 & 2 & 1 & 3 & 4 3 3 3 2 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AM K6) CPU Clock Multiplier JP1 JP2 JP3 JP4 JP13 speed speed 166MHz 66MHz 2.5x 2 & 2 & 2 & 1 & 3 & 4 3 3 3 2 200MHz 66MHz 3x 1 & 2 & 2 & 1 & 3 & 4 2 3 3 2 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL) CPU Clock Multiplier JP1 JP2 JP3 JP4 JP13 speed speed 75MHz 50MHz 1.5x 1 & 1 & 2 & 2 & 1 & 2, 2 2 3 3 5 & 6 90MHz 60MHz 1.5x 1 & 1 & 1 & 2 & 1 & 2, 2 2 2 3 3 & 4 100MHz 66MHz 1.5x 1 & 1 & 2 & 1 & 3 & 4 2 2 3 2 120MHz 60MHz 2x 2 & 1 & 1 & 2 & 1 & 2, 3 2 2 3 3 & 4 133MHz 66MHz 2x 2 & 1 & 2 & 1 & 3 & 4 3 2 3 2 150MHz 60MHz 2.5x 2 & 2 & 1 & 2 & 1 & 2, 3 3 2 3 3 & 4 166MHz 66MHz 2.5x 2 & 2 & 2 & 1 & 3 & 4 3 3 3 2 200MHz 66MHz 3x 1 & 2 & 2 & 1 & 3 & 4 2 3 3 2 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL MMX) CPU Clock Multiplier JP1 JP2 JP3 JP4 JP13 speed speed 150MHz 60MHz 2.5x 2 & 2 & 1 & 2 & 1 & 2, 3 3 2 3 3 & 4 166MHz 66MHz 2.5x 2 & 2 & 2 & 1 & 3 & 4 3 3 3 2 200MHz 66MHz 3x 1 & 2 & 2 & 1 & 3 & 4 2 3 3 2 233MHz 66MHz 3.5x 1 & 1 & 2 & 1 & 3 & 4 2 2 3 2 Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION (SINGLE) Voltage JP7 JP8 JP9 JP10 JP11 3.45v 1 & 2 1 & 2 Closed Open Closed Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION (DUAL) Voltage V core JP7 JP8 JP9 JP10 JP11 3.45v 2.8v 7 & 8 1 & 2 Open Closed Open 3.45v 2.9v 5 & 6 1 & 2 Open Closed Open 3.45v 3.52v 3 & 4 1 & 2 Closed Open Closed Note: Pins designated should be in the closed position.