P55KTX Motherboard Settings and Configuration

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 Memory
256MB (SDRAM supported)
Maximum Video Memory
None
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

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 speed
Multiplier
J7
J8
J9
J11
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 speed
Multiplier
J7
J8
J9
J11
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 speed
Multiplier
J7
J8
J9
J11
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 speed
Multiplier
J7
J8
J9
J11
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 speed
Multiplier
J7
J8
J9
J11
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 speed
Multiplier
J7
J8
J9
J11
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 speed
Multiplier
J7
J8
J9
J11
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 speed
Multiplier
J7
J8
J9
J11
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

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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 Memory	256MB (SDRAM supported)
Maximum Video Memory	None
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

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.

CPU SPEED SELECTION (CX 6X86L)
CPU speed	Clock speed	Multiplier	J7	J8	J9	J11
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 speed	Multiplier	J7	J8	J9	J11
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 speed	Multiplier	J7	J8	J9	J11
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 speed	Multiplier	J7	J8	J9	J11
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 speed	Multiplier	J7	J8	J9	J11
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 speed	Multiplier	J7	J8	J9	J11
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 speed	Multiplier	J7	J8	J9	J11
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 speed	Multiplier	J7	J8	J9	J11
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