UNIDENTIFIED P55-ET Processor Pentium Processor Speed 75/90/100/120/133/150/166MHz Chip Set Intel Video Chip Set None Maximum Onboard 128MB (EDO supported) Memory Maximum Video Memory None Cache 256/512KB BIOS Award Dimensions 330mm x 218mm I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, PS/2 mouse interface, serial ports (2), cache slot, VRM connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Serial port 2 CN1 Turbo switch J4 Serial port 1 CN2 Turbo LED J5 Parallel port CN3 Green PC LED J6 Floppy drive interface CN4 Chassis fan power J7 IDE interface 2 CN5 PS/2 mouse interface J10 IDE interface 1 CN6 IDE interface LED JP5 PS/2 mouse port CN7 Green PC connector JP14 Power LED & keylock J1 32-bit PCI slots PC1 - PC4 Speaker J2 Cache slot SL1 Reset switch J3 VRM connector VRM USER CONFIGURABLE SETTINGS Function Label Position » SMC chip enabled J24 Open SMC chip disabled J24 Closed » Flash BIOS voltage select 5v JP6 Pins 1 & 2 closed Flash BIOS voltage select 12v JP6 Pins 2 & 3 closed Jumper information unavailable JP12 Unidentified » Clock rate set as AT CLOCK JP15 Pins 1 & 2 closed Clock rate set as 12MHz JP15 Pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 8MB (2) 1M x 36 None 16MB (2) 1M x 36 (2) 1M x 36 16MB (2) 2M x 36 None 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 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 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 Note: Board accepts EDO memory. Board also accepts x 32 SIMMs. CACHE CONFIGURATION Size Bank 0 TAG SL1 256KB (A) (2) 32K x 32 None 256KB module installed 256KB (B) (2) 32K x 32 (1) 8K/16K x 8 Not installed 512KB (A) (2) 64K x 32 (1) 16K/32K x 8 Not installed 512KB (B) (2) 32K x 32 (1) 16K/32K x 8 256KB module installed Note: If 256KB (A) configuration is used, see jumper setting for TP1 below. CACHE JUMPER CONFIGURATION Size JP10 JP11 256KB (B) Pins 1 & 2 closed Pins 1 & 2 closed 512KB (A) Pins 1 & 2 closed Pins 1 & 2 closed 512KB (B) Pins 2 & 3 closed Pins 2 & 3 closed CACHE JUMPER CONFIGURATION Size TP1 Bank 0 enabled Open Bank 0 disabled Pins 1 & 2, 3 & 4 closed CPU SPEED SELECTION CPU Clock Multiplier J25 JP7 JP9 JPS1 JPS2 speed speed 75MHz 50MHz 1.5x 1 & 2 & 2 & Open Open 2 3 3 90MHz 60MHz 1.5x 2 & 2 & 2 & Closed Open 3 3 3 100MHz 66MHz 1.5x 2 & 2 & 2 & Closed Closed 3 3 3 120MHz 60MHz 2x 2 & 1 & 2 & Closed Open 3 2 3 133MHz 66MHz 2x 2 & 1 & 2 & Closed Closed 3 2 3 150MHz 60MHz 2.5x 2 & 1 & 1 & Closed Open 3 2 2 166MHz 66MHz 2.5x 2 & 1 & 1 & Closed Closed 3 2 2 Note: Pins designated should be in the closed position. CPU TYPE SELECTION Type JP1 P54C/P54CS Pins 1 & 2 closed P55C/P55CT Pins 2 & 3 closed [Image] CACHE JUMPER CONFIGURATION (ESCM CACHE MODULE) Size JP1 256KB Pins 1 & 2, 5 & 6 closed 512KB Pins 2 & 3, 4 & 5 closed