ASUS COMPUTER INTERNATIONAL P/I-P55SP4 Processor Pentium Processor Speed 75/90/100/120/133/150/166MHz Chip Set SIS Max. Onboard DRAM 512MB Cache 256/512/1024KB BIOS Award Dimensions 330mm x 218mm I/O Options Parallel port, serial ports (2), 32-bit PCI slots (4), green PC connector, floppy drive interface, IDE interfaces (2), cache slot, MediaBus slot, infrared connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location PS/2 mouse CN1 Green PC connector J1 pins 14 & interface 15 Serial port 2 CN2 Turbo switch J1 pins 16 & 17 Serial port 1 CN3 Reset switch J1 pins 19 & 20 Parallel port CN4 Green PC connector JP1 Floppy drive CN5 Chassis fan power JP26 interface IDE interface 1 CN6 IDE interface LED JP27 IDE interface 2 CN7 Infrared connector JP31 Power LED & J1 pins 1 - 32-bit PCI slots PC1 - PC4 keylock 5 Speaker J1 pins 7 - MediaBus slot SL1 10 Turbo LED J1 pins 12 & Cache slot SL2 13 USER CONFIGURABLE SETTINGS Function Jumper Position » PS/2 mouse port disabled JP5 pins 1 & 2 closed PS/2 mouse port enabled JP5 pins 2 & 3 closed » Flash BIOS boot block protected JP16 pins 1 & 2 closed Flash BIOS boot block programming JP16 pins 2 & 3 enabled closed » On board I/O enabled JP1C pins 1 & 2 closed On board I/O disabled JP1C pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 2MB (2) 256K x 36 NONE 4MB (2) 256K x 36 (2) 256K x 36 4MB (2) 512K x 36 NONE 6MB (2) 256K x 36 (2) 512K x 36 6MB (2) 512K x 36 (2) 256K x 36 8MB (2) 512K x 36 (2) 512K x 36 8MB (2) 1M x 36 NONE 10MB (2) 256K x 36 (2) 1M x 36 10MB (2) 1M x 36 (2) 256K x 36 12MB (2) 512K x 36 (2) 1M x 36 12MB (2) 1M x 36 (2) 512K x 36 16MB (2) 1M x 36 (2) 1M x 36 16MB (2) 2M x 36 NONE 18MB (2) 256K x 36 (2) 2M x 36 18MB (2) 2M x 36 (2) 256K x 36 20MB (2) 512K x 36 (2) 2M x 36 20MB (2) 2M x 36 (2) 512K x 36 24MB (2) 1M x 36 (2) 2M x 36 24MB (2) 2M x 36 (2) 1M x 36 32MB (2) 2M x 36 (2) 2M x 36 32MB (2) 4M x 36 NONE 34MB (2) 256K x 36 (2) 4M x 36 34MB (2) 4M x 36 (2) 256K x 36 36MB (2) 512K x 36 (2) 4M x 36 36MB (2) 4M x 36 (2) 512K x 36 40MB (2) 1M x 36 (2) 4M x 36 40MB (2) 4M x 36 (2) 1M x 36 48MB (2) 2M x 36 (2) 4M x 36 48MB (2) 4M x 36 (2) 2M x 36 64MB (2) 4M x 36 (2) 4M x 36 64MB (2) 8M x 36 NONE 66MB (2) 256K x 36 (2) 8M x 36 66MB (2) 8M x 36 (2) 256K x 36 68MB (2) 512K x 36 (2) 8M x 36 68MB (2) 8M x 36 (2) 512K x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 72MB (2) 1M x 36 (2) 8M x 36 72MB (2) 8M x 36 (2) 1M x 36 80MB (2) 2M x 36 (2) 8M x 36 80MB (2) 8M x 36 (2) 2M x 36 96MB (2) 4M x 36 (2) 8M x 36 96MB (2) 8M x 36 (2) 4M x 36 128MB (2) 8M x 36 (2) 8M x 36 128MB (2) 16M x 36 NONE 130MB (2) 256K x 36 (2) 16M x 36 130MB (2) 16M x 36 (2) 256K x 36 132MB (2) 512K x 36 (2) 16M x 36 132MB (2) 16M x 36 (2) 512K x 36 136MB (2) 1M x 36 (2) 16M x 36 136MB (2) 16M x 36 (2) 1M x 36 144MB (2) 2M x 36 (2) 16M x 36 144MB (2) 16M x 36 (2) 2M x 36 160MB (2) 4M x 36 (2) 16M x 36 160MB (2) 16M x 36 (2) 4M x 36 192MB (2) 8M x 36 (2) 16M x 36 192MB (2) 16M x 36 (2) 8M x 36 256MB (2) 16M x 36 (2) 16M x 36 256MB (2) 32M x 36 NONE 258MB (2) 256K x 36 (2) 32M x 36 258MB (2) 32M x 36 (2) 256K x 36 260MB (2) 512K x 36 (2) 32M x 36 260MB (2) 32M x 36 (2) 512K x 36 264MB (2) 1M x 36 (2) 32M x 36 264MB (2) 32M x 36 (2) 1M x 36 272MB (2) 2M x 36 (2) 32M x 36 272MB (2) 32M x 36 (2) 2M x 36 288MB (2) 4M x 36 (2) 32M x 36 288MB (2) 32M x 36 (2) 4M x 36 320MB (2) 8M x 36 (2) 32M x 36 320MB (2) 32M x 36 (2) 8M x 36 384MB (2) 16M x 36 (2) 32M x 36 384MB (2) 32M x 36 (2) 16M x 36 512MB (2) 32M x 36 (2) 32M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG SL2 256KB (4) 32K x (4) 32K x 8 (1) 8K or Card not 8 (1) 32K x installed 8 256KB NONE NONE NONE Card installed 512KB (4) 64K x (4) 64K x 8 (1) 8K or Card not 8 (1) 32K x installed 8 512KB NONE NONE NONE Card installed 1MB (4) 128K x (4) 128K x (1) 8K or Card not 8 8 (1) 32K x installed 8 1MB NONE NONE NONE Card installed CACHE JUMPER CONFIGURATION Size JP10 JP11 256KB pins 1 & 2 closed pins 1 & 2 closed 512KB pins 2 & 3 closed pins 1 & 2 closed 1MB pins 2 & 3 closed pins 2 & 3 closed CACHE TYPE CONFIGURATION Type JP6 JP7 JP8 JP9 3.3v cache Open Open Closed Closed Mixed mode Closed Closed Open Open cache CPU SPEED CONFIGURATION Speed JP12 JP13 JP14 75MHz pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 90MHz pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed 100MHz pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed 120MHz pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed 133MHz pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed 150MHz pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed 166MHz pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed CPU CLOCK SPEED CONFIGURATION Speed JP20 JP21 1.5x Open Open 2x Open Closed 2.5x Closed Closed 3x Closed Open VOLTAGE REGULATOR CONFIGURATION Type JP22 JP23 JP28 JP29 STD/VR Closed Open Closed Open VRE Open Closed Open Closed VOLTAGE REGULATOR TYPE CONFIGURATION Setting JP32 JP33 JP34 JP35 Not installed Closed Closed Closed Closed Installed Open Open Open Open Note: The location of the above jumpers are unidentified. UART/IR CONFIGURATION Speed JP1A JP1B UART2 pins 1 & 2 closed pins 1 & 2 closed IR pins 2 & 3 closed pins 2 & 3 closed