EPOX COMPUTER CO., LTD. P55KTX Device Type Mainboard Processor CX 6X86L/IBM 6X86L/CX 686MX/IBM 6X86MX/AM K5/ AM K6/Pentium/Pentium MMX Processor Speed 90/100/120/133/150/166/200/233/266/300/333MHz Chip Set VIA Video Chip Set None Maximum Onboard 256MB (SDRAM supported) Memory Maximum Video None Memory Cache 512KB BIOS Award Dimensions 305mm x 244mm I/O Options 32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connector, ATX power connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location ATX power connector ATX CPU fan power J6 USB connector CN1 Power LED & keylock J12A Serial port 2 CN2 Speaker J12B Parallel port CN3 Reset switch J12C PS/2 mouse port CN4 Green PC LED J12D Serial port 1 CN5 Turbo LED J12E Floppy drive interface CN6 IDE interface LED J12F IDE interface 1 CN7 Soft off power supply J12G IDE interface 2 CN8 32-bit PCI slots PC1 – PC4 IR connector J3 Note: The location of J3 is unidentified. USER CONFIGURABLE SETTINGS Function Label Position Keyboard power on disabled J1 Pins 1 & 2 closed Keyboard power on enabled J1 Pins 2 & 3 closed DIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 8MB (1) 1M x 64 None None 16MB (1) 1M x 64 (1) 1M x 64 None 16MB (1) 2M x 64 None None 24MB (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 32MB (1) 2M x 64 (1) 2M x 64 None 32MB (1) 4M x 64 None None 48MB (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 64MB (1) 4M x 64 (1) 4M x 64 None 64MB (1) 8M x 64 None None 96MB (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 128MB (1) 8M x 64 (1) 8M x 64 None 128MB (1) 16M x 64 None None 164MB (1) 16M x 64 (1) 1M x 64 None 144MB (1) 16M x 64 (1) 1M x 64 (1) 1M x 64 144MB (1) 16M x 64 (1) 2M x 64 None 160MB (1) 16M x 64 (1) 2M x 64 (1) 2M x 64 DIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 160MB (1) 16M x 64 (1) 4M x 64 None 192MB (1) 16M x 64 (1) 4M x 64 (1) 4M x 64 192MB (1) 16M x 64 (1) 8M x 64 None 192MB (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 256MB (1) 16M x 64 (1) 16M x 64 None Note: Board accepts SDRAM memory. CACHE CONFIGURATION Size Bank 0 512KB (1) 64K x 64 CPU SPEED SELECTION (CX 6X86L) CPU speed Clock Multiplier J7 J8 J9 J11 speed 150MHz 60MHz 2.5x 1 & 2 1 & 2 2 & 3 1 & 2 166MHz 66MHz 2.5x 1 & 2 1 & 2 2 & 3 Open 200MHz 75MHz 3x 1 & 2 1 & 2 2 & 3 3 & 4 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (IBM 6X86L) CPU speed Clock Multiplier J7 J8 J9 J11 speed 150MHz 60MHz 2.5x 1 & 2 1 & 2 2 & 3 1 & 2 166MHz 66MHz 2.5x 1 & 2 1 & 2 2 & 3 Open 200MHz 75MHz 3x 1 & 2 1 & 2 2 & 3 3 & 4 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (CX 6X86MX) CPU speed Clock Multiplier J7 J8 J9 J11 speed 166MHz 66MHz 2x 1 & 2 1 & 2 2 & 3 Open 166MHz 60MHz 2.5x 1 & 2 2 & 3 2 & 3 1 & 2 200MHz 75MHz 2x 1 & 2 1 & 2 2 & 3 3 & 4 200MHz 66MHz 2.5x 1 & 2 2 & 3 2 & 3 Open 233MHz 75MHz 2.5x 1 & 2 2 & 3 2 & 3 3 & 4 233MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 Open 266MHz 75MHz 3x 1 & 2 2 & 3 1 & 2 3 & 4 266MHz 66MHz 3.5x 1 & 2 1 & 2 1 & 2 Open Note: Pins designated should be in the closed position. CPU SPEED SELECTION (IBM 6X86MX) CPU speed Clock Multiplier J7 J8 J9 J11 speed 166MHz 66MHz 2x 1 & 2 1 & 2 2 & 3 Open 166MHz 60MHz 2.5x 1 & 2 2 & 3 2 & 3 1 & 2 200MHz 75MHz 2x 1 & 2 1 & 2 2 & 3 3 & 4 200MHz 66MHz 2.5x 1 & 2 2 & 3 2 & 3 Open 233MHz 75MHz 2.5x 1 & 2 2 & 3 2 & 3 3 & 4 233MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 Open 266MHz 75MHz 3x 1 & 2 2 & 3 1 & 2 3 & 4 266MHz 66MHz 3.5x 1 & 2 1 & 2 1 & 2 Open Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AM K5) CPU speed Clock Multiplier J7 J8 J9 J11 speed 90MHz 60MHz 1.5x 1 & 2 1 & 2 1 & 2 1 & 2 100MHz 66MHz 1.5x 1 & 2 1 & 2 1 & 2 Open 120MHz 60MHz 2x 1 & 2 1 & 2 2 & 3 1 & 2 133MHz 66MHz 2x 1 & 2 1 & 2 2 & 3 Open 150MHz 60MHz 2.5x 1 & 2 2 & 3 2 & 3 1 & 2 166MHz 66MHz 2.5x 1 & 2 2 & 3 2 & 3 Open 200MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 Open Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AM K6) CPU speed Clock Multiplier J7 J8 J9 J11 speed 166MHz 66MHz 2.5x 1 & 2 2 & 3 2 & 3 Open 200MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 Open 233MHz 66MHz 3.5x 1 & 2 1 & 2 1 & 2 Open 266MHz 66MHz 4x 2 & 3 1 & 2 2 & 3 Open 300MHz 66MHz 4.5x 2 & 3 2 & 3 2 & 3 Open 333MHz 66MHz 5x 2 & 3 2 & 3 1 & 2 Open Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL) CPU speed Clock Multiplier J7 J8 J9 J11 speed 90MHz 60MHz 1.5x 1 & 2 1 & 2 1 & 2 1 & 2 100MHz 66MHz 1.5x 1 & 2 1 & 2 1 & 2 Open 120MHz 60MHz 2x 1 & 2 1 & 2 2 & 3 1 & 2 133MHz 66MHz 2x 1 & 2 1 & 2 2 & 3 Open 150MHz 60MHz 2.5x 1 & 2 2 & 3 2 & 3 1 & 2 166MHz 66MHz 2.5x 1 & 2 2 & 3 2 & 3 Open 200MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 Open Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL MMX) CPU speed Clock Multiplier J7 J8 J9 J11 speed 166MHz 66MHz 2.5x 1 & 2 2 & 3 2 & 3 Open 200MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 Open 233MHz 66MHz 3.5x 1 & 2 1 & 2 1 & 2 Open 266MHz 66MHz 4x 2 & 3 1 & 2 2 & 3 Open 300MHz 66MHz 4.5x 2 & 3 2 & 3 2 & 3 Open 333MHz 66MHz 5x 2 & 3 2 & 3 1 & 2 Open Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION Voltage J10 2.0v Pins 1 & 2 closed 2.8v Pins 3 & 4 closed 2.9v Pins 5 & 6 closed 3.2v Pins 7 & 8 closed 3.5v Pins 9 & 10 closed