EM-5558 Motherboard Settings and Configuration

Device Type	Mainboard
Processor	CX 6X86/CX 6X86L/CX M2/IBM 6X86/IBM6X86L/IBM M2/AM K5/ AM K6/Pentium
Processor Speed	75/90/100/120/133/150/166/180/200/233MHz
Chip Set	Intel
Video Chip Set	None
Maximum Onboard Memory	128MB (EDO supported)
Maximum Video Memory	None
Cache	256/512KB
BIOS	Unidentified
Dimensions	254mm x 218mm
I/O Options	32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), parallel port, serial ports (2), cache slot
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
IDE interface LED	C1	IDE interface 2	CN4
Reset switch	C2	IDE interface 1	CN5
Speaker	C3	Floppy drive interface	CN6
Power LED & keylock	C4	Chassis fan power	FAN
Serial port 2	CN1	32-bit PCI slots	PC1 – PC4
Serial port 1	CN2	Cache slot	SL1
Parallel port	CN3

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	CMOS memory normal operation	J8	Pins 1 & 2 closed
	CMOS memory clear	J8	Pins 2 & 3 closed
»	Factory configured - do not alter	JP5	Unidentified
	Flash BIOS voltage select 12v	JP8	Pins 1 & 2 closed
	Flash BIOS voltage select 5v	JP8	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
128MB	(2) 8M x 36	(2) 8M x 36
Note: Board accepts EDO memory.

CACHE CONFIGURATION
Size	Bank 0	Bank 1	SL1
256KB	None	None	256KB module installed
256KB	(2) 32K x 32	None	Not installed
512KB	None	None	512KB module installed
512KB	(2) 32K x 32	(2) 32K x 32	Not installed
Note: The location of banks 0 & 1 are unidentified.

CACHE JUMPER CONFIGURATION
Size	JP4
256KB	Pins 1 & 2 closed
512KB	Pins 2 & 3 closed

CPU SPEED SELECTION (CX 6X86)
CPU speed	Clock speed	Multiplier	JP1	JP2	JP3	JP6	JP7
120MHz	50MHz	2x	2 & 3	2 & 3	2 & 3	1 & 2	2 & 3
150MHz	60MHz	2x	1 & 2	2 & 3	2 & 3	1 & 2	2 & 3
166MHz	66MHz	2x	2 & 3	1 & 2	2 & 3	1 & 2	2 & 3
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (IBM 6X86)
CPU speed	Clock speed	Multiplier	JP1	JP2	JP3	JP6	JP7
120MHz	50MHz	2x	2 & 3	2 & 3	2 & 3	1 & 2	2 & 3
150MHz	60MHz	2x	1 & 2	2 & 3	2 & 3	1 & 2	2 & 3
166MHz	66MHz	2x	2 & 3	1 & 2	2 & 3	1 & 2	2 & 3
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (CX 6X86L)
CPU speed	Clock speed	Multiplier	JP1	JP2	JP3	JP6	JP7
150MHz	60MHz	2x	1 & 2	2 & 3	2 & 3	1 & 2	2 & 3
166MHz	66MHz	2x	2 & 3	1 & 2	2 & 3	1 & 2	2 & 3
200MHz	75MHz	2x	1 & 2	2 & 3	1 & 2	1 & 2	2 & 3
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (IBM 6X86L)
CPU speed	Clock speed	Multiplier	JP1	JP2	JP3	JP6	JP7
150MHz	60MHz	2x	1 & 2	2 & 3	2 & 3	1 & 2	2 & 3
166MHz	66MHz	2x	2 & 3	1 & 2	2 & 3	1 & 2	2 & 3
200MHz	75MHz	2x	1 & 2	2 & 3	1 & 2	1 & 2	2 & 3
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (CX M2)
CPU speed	Clock speed	Multiplier	JP1	JP2	JP3	JP6	JP7
166MHz	66MHz	2.5x	2 & 3	1 & 2	2 & 3	2 & 3	2 & 3
200MHz	66MHz	3x	2 & 3	1 & 2	2 & 3	2 & 3	1 & 2
233MHz	66MHz	3.5x	2 & 3	1 & 2	2 & 3	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (IBM M2)
CPU speed	Clock speed	Multiplier	JP1	JP2	JP3	JP6	JP7
166MHz	66MHz	2.5x	2 & 3	1 & 2	2 & 3	2 & 3	2 & 3
200MHz	66MHz	3x	2 & 3	1 & 2	2 & 3	2 & 3	1 & 2
233MHz	66MHz	3.5x	2 & 3	1 & 2	2 & 3	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (AM K5)
CPU speed	Clock speed	Multiplier	JP1	JP2	JP3	JP6	JP7
75MHz	50MHz	1.5x	2 & 3	2 & 3	2 & 3	1 & 2	1 & 2
90MHz	60MHz	1.5x	1 & 2	2 & 3	2 & 3	1 & 2	1 & 2
100MHz	66MHz	1.5x	2 & 3	1 & 2	2 & 3	1 & 2	1 & 2
120MHz	60MHz	2x	1 & 2	2 & 3	2 & 3	1 & 2	2 & 3
133MHz	66MHz	2x	2 & 3	1 & 2	2 & 3	1 & 2	2 & 3
150MHz	60MHz	2.5x	1 & 2	2 & 3	2 & 3	2 & 3	2 & 3
166MHz	66MHz	2.5x	2 & 3	1 & 2	2 & 3	2 & 3	2 & 3
180MHz	60MHz	3x	1 & 2	2 & 3	2 & 3	2 & 3	1 & 2
200MHz	66MHz	3x	2 & 3	1 & 2	2 & 3	2 & 3	1 & 2
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (AM K6)
CPU speed	Clock speed	Multiplier	JP1	JP2	JP3	JP6	JP7
166MHz	66MHz	2.5x	2 & 3	1 & 2	2 & 3	2 & 3	2 & 3
200MHz	66MHz	3x	2 & 3	1 & 2	2 & 3	2 & 3	1 & 2
233MHz	66MHz	3.5x	2 & 3	1 & 2	2 & 3	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (INTEL)
CPU speed	Clock speed	Multiplier	JP1	JP2	JP3	JP6	JP7
75MHz	50MHz	1.5x	2 & 3	2 & 3	2 & 3	1 & 2	1 & 2
90MHz	60MHz	1.5x	1 & 2	2 & 3	2 & 3	1 & 2	1 & 2
100MHz	66MHz	1.5x	2 & 3	1 & 2	2 & 3	1 & 2	1 & 2
120MHz	60MHz	2x	1 & 2	2 & 3	2 & 3	1 & 2	2 & 3
133MHz	66MHz	2x	2 & 3	1 & 2	2 & 3	1 & 2	2 & 3
150MHz	60MHz	2.5x	1 & 2	2 & 3	2 & 3	2 & 3	2 & 3
166MHz	66MHz	2.5x	2 & 3	1 & 2	2 & 3	2 & 3	2 & 3
180MHz	60MHz	3x	1 & 2	2 & 3	2 & 3	2 & 3	1 & 2
200MHz	66MHz	3x	2 & 3	1 & 2	2 & 3	2 & 3	1 & 2
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (INTEL MMX)
CPU speed	Clock speed	Multiplier	JP1	JP2	JP3	JP6	JP7
166MHz	66MHz	2.5x	2 & 3	1 & 2	2 & 3	2 & 3	2 & 3
200MHz	66MHz	3x	2 & 3	1 & 2	2 & 3	2 & 3	1 & 2
233MHz	66MHz	3.5x	2 & 3	1 & 2	2 & 3	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION
Type	JP10A	JP10B
AM K5	Pins 2 & 3 closed	Pins 2 & 3 closed
AM K6	Pins 1 & 2 closed	Pins 1 & 2 closed
CX 6X86	Pins 2 & 3 closed	Pins 2 & 3 closed
CX 6X86L	Pins 1 & 2 closed	Pins 1 & 2 closed
CX M2	Pins 1 & 2 closed	Pins 1 & 2 closed
IBM 6X86	Pins 2 & 3 closed	Pins 2 & 3 closed
IBM 6X86L	Pins 1 & 2 closed	Pins 1 & 2 closed
IBM M2	Pins 1 & 2 closed	Pins 1 & 2 closed
P54C	Pins 2 & 3 closed	Pins 2 & 3 closed
P55C	Pins 1 & 2 closed	Pins 1 & 2 closed

CPU VOLTAGE SELECTION
Voltage	JP9A	JP9B	JP9C	JP9D	JP9E
2.5v	Open	Open	Open	Open	Open
2.8v	Open	Open	Open	Open	Closed
2.9v	Open	Open	Open	Closed	Open
3.2v	Open	Open	Closed	Open	Open
3.3v	Open	Closed	Open	Open	Open
3.5v	Closed	Open	Open	Open	Open