S1684S Motherboard Settings and Configuration

Device Type	Mainboard
Processor	Pentium Pro/Pentium II
Processor Speed	150/166/180/200/233/266/300MHz
Chip Set	Intel
Video Chip Set	None
Maximum Onboard Memory	768MB (EDO supported)
Maximum Video Memory	None
Cache	256/512KB (located on Pentium Pro/Pentium II CPU)
BIOS	AMI, Award
Dimensions	305mm x 244mm
I/O Options	32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
ATX power connector	ATX	CPU fan fail warning	J28
Parallel port	CN1	IDE interface LED	J39
Serial port 2	CN2	Soft off power supply	J45
Serial port 1	CN3	Keylock	J49/pins 4 & 5
IDE interface 2	CN6	Soft off power supply	J50/pins 1 & 2
IDE interface 1	CN7	Green PC connector	J50/pins 3 & 4
Floppy drive interface	CN8	IR connector	J50/pins 8 - 10
PS/2 mouse port	J2	IDE interface LED	J50/pins 15 & 16
USB connector 1	J3	Power LED	J50/pins 18 - 20
USB connector 2	J3A	Reset switch	J50/pins 22 & 23
CPU fan power	J24	Speaker	J50/pins 24 - 27
CPU fan power	J25	32-bit PCI slots	PC1 – PC4

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	CON7	Unidentified
	Serial port used as serial port	J12	Pins 1 & 2 closed
	Serial port used as IR connector	J12	Pins 2 & 3 closed
»	Factory configured - do not alter	J13	Unidentified
»	Factory configured - do not alter	J17	Unidentified
»	Factory configured - do not alter	J21	Unidentified
»	Factory configured - do not alter	J22	Unidentified
»	Factory configured - do not alter	J29	Unidentified
»	Flash BIOS voltage select 5v	J36	Pins 1 & 2 closed
	Flash BIOS voltage select 12v	J36	Pins 2 & 3 closed
»	Factory configured - do not alter	J46	Unidentified
»	Factory configured - do not alter	J51	Unidentified
»	CMOS memory normal operation	J52	Open
	CMOS memory clear	J52	Closed
»	Factory configured - do not alter	J53	Unidentified
»	Factory configured - do not alter	J54	Unidentified

SIMM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
8MB	(2) 1M x 36	None	None
16MB	(2) 1M x 36	(2) 1M x 36	None
16MB	(2) 2M x 36	None	None
24MB	(2) 1M x 36	(2) 1M x 36	(2) 1M x 36
32MB	(2) 2M x 36	(2) 2M x 36	None
32MB	(2) 4M x 36	None	None
48MB	(2) 2M x 36	(2) 2M x 36	(2) 2M x 36
64MB	(2) 4M x 36	(2) 4M x 36	None
64MB	(2) 8M x 36	None	None
96MB	(2) 4M x 36	(2) 4M x 36	(2) 4M x 36
128MB	(2) 8M x 36	(2) 8M x 36	None
128MB	(2) 16M x 36	None	None
136MB	(2) 16M x 36	(2) 1M x 36	None
144MB	(2) 16M x 36	(2) 1M x 36	(2) 1M x 36
144MB	(2) 16M x 36	(2) 2M x 36	None
160MB	(2) 16M x 36	(2) 2M x 36	(2) 2M x 36
160MB	(2) 16M x 36	(2) 4M x 36	None
192MB	(2) 16M x 36	(2) 4M x 36	(2) 4M x 36
192MB	(2) 16M x 36	(2) 8M x 36	None
192MB	(2) 8M x 36	(2) 8M x 36	(2) 8M x 36
256MB	(2) 16M x 36	(2) 8M x 36	(2) 8M x 36
256MB	(2) 16M x 36	(2) 16M x 36	None
256MB	(2) 32M x 36	None	None
264MB	(2) 32M x 36	(2) 1M x 36	None
272MB	(2) 32M x 36	(2) 1M x 36	(2) 1M x 36
272MB	(2) 32M x 36	(2) 2M x 36	None
288MB	(2) 32M x 36	(2) 2M x 36	(2) 2M x 36
288MB	(2) 32M x 36	(2) 4M x 36	None
320MB	(2) 32M x 36	(2) 4M x 36	(2) 4M x 36
320MB	(2) 32M x 36	(2) 8M x 36	None
384MB	(2) 32M x 36	(2) 8M x 36	(2) 8M x 36
384MB	(2) 32M x 36	(2) 16M x 36	None

SIMM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2
384MB	(2) 16M x 36	(2) 16M x 36	(2) 16M x 36
512MB	(2) 32M x 36	(2) 16M x 36	(2) 16M x 36
512MB	(2) 32M x 36	(2) 32M x 36	None
768MB	(2) 32M x 36	(2) 32M x 36	(2) 32M x 36
Note: Board accepts EDO memory.

SIMM VOLTAGE CONFIGURATION
Voltage		J32	J33	J34	J35
	3.3v	Closed	Closed	Closed	Closed
»	5v	Open	Open	Open	Open

SIMM VOLTAGE CONFIGURATION (CON’T)
Voltage		J41	J43	J47	J48
	3.3v	Open	Open	Open	Open
»	5v	Closed	Closed	Closed	Closed

CACHE CONFIGURATION

Note: 256KB/512KB cache is located on the Pentium Pro/Pentium II CPU.

CPU SPEED SELECTION (PENTIUM PRO)
CPU speed	Clock speed	Multiplier	J30	J31	J37	J38
150MHz	60MHz	2.5x	Open	Closed	3 & 4	Closed
166MHz	66MHz	2.5x	Closed	Open	1 & 2	Closed
180MHz	60MHz	3x	Open	Closed	3 & 4	Closed
200MHz	66MHz	3x	Closed	Open	1 & 2	Closed
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (PENTIUM PRO, CON’T)
CPU speed	Clock speed	Multiplier	J40	J42	J44
150MHz	60MHz	2.5x	Open	Closed	Closed
166MHz	66MHz	2.5x	Open	Closed	Closed
180MHz	60MHz	3x	Closed	Open	Closed
200MHz	66MHz	3x	Closed	Open	Closed

CPU SPEED SELECTION (PENTIUM II)
CPU speed	Clock speed	Multiplier	J30	J31	J37	J38
200MHz	66MHz	3x	Closed	Open	1 & 2	Closed
233MHz	66MHz	3.5x	Open	Closed	3 & 4	Closed
266MHz	66MHz	4x	Closed	Open	1 & 2	Closed
300MHz	66MHz	4.5x	Open	Closed	3 & 4	Closed
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (PENTIUM II, CON’T)
CPU speed	Clock speed	Multiplier	J40	J42	J44
200MHz	66MHz	3x	Closed	Open	Closed
233MHz	66MHz	3.5x	Open	Open	Closed
266MHz	66MHz	4x	Closed	Closed	Open
300MHz	66MHz	4.5x	Open	Closed	Open