MB6831 Motherboard Settings and Configuration

Device Type	Mainboard
Processor	Pentium II
Processor Speed	233/266/300/333MHz
Chip Set	Intel 440LX
Video Chip Set	None
Maximum Onboard Memory	512MB (EDO & SDRAM supported)
Maximum Video Memory	None
Cache	256/512KB (located on Pentium II CPU)
BIOS	Award
Dimensions	305mm x 240mm
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 connectors (2), ATX power connector, AGP slot

CONNECTIONS
Purpose	Location	Purpose	Location
AGP slot	AGP	Reset switch	J32
ATX power connector	ATX	USB connector 1	J33
IDE interface 1	J13	USB connector 2	J34
IDE interface 2	J14	IR connector	JP4
Parallel port	J19	Speaker	JP24
Serial port 1	J20	CPU fan power	JP28
Serial port 2	J21	Chassis fan power	JP29
Floppy drive interface	J22	AGP fan power	JP43
PS/2 mouse port	J24	32-bit PCI slots	PC1 – PC4
Power LED & keylock	J27	Soft off power supply	S1
IDE interface LED	J30

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	J16	Pins 2 & 3 closed
»	Factory configured - do not alter	J42	Open
»	Factory configured - do not alter	JP2	Pins 2 & 3 closed
»	CMOS memory normal operation	JP19	Pins 2 & 3 closed
	CMOS memory clear	JP19	Pins 1 & 2 closed
	Any hard drive installed	JP32	Pins 1 & 2 closed
	Seagate 5v hard drive installed	JP32	Pins 2 & 3 closed

DIMM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
8MB	(1) 1M x 64	None	None	None
16MB	(1) 2M x 64	None	None	None
16MB	(1) 1M x 64	(1) 1M x 64	None	None
24MB	(1) 2M x 64	(1) 1M x 64	None	None
24MB	(1) 1M x 64	(1) 1M x 64	(1) 1M x 64	None
32MB	(1) 4M x 64	None	None	None
32MB	(1) 2M x 64	(1) 2M x 64	None	None
32MB	(1) 1M x 64	(1) 1M x 64	(1) 1M x 64	(1) 1M x 64
40MB	(1) 4M x 64	(1) 1M x 64	None	None
48MB	(1) 4M x 64	(1) 2M x 64	None	None

DIMM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
48MB	(1) 2M x 64	(1) 2M x 64	(1) 2M x 64	None
64MB	(1) 2M x 64	(1) 2M x 64	(1) 2M x 64	(1) 2M x 64
64MB	(1) 8M x 64	None	None	None
64MB	(1) 4M x 64	(1) 4M x 64	None	None
72MB	(1) 8M x 64	(1) 1M x 64	None	None
80MB	(1) 8M x 64	(1) 2M x 64	None	None
96MB	(1) 8M x 64	(1) 4M x 64	None	None
96MB	(1) 4M x 64	(1) 4M x 64	(1) 4M x 64	None
128MB	(1) 16M x 64	None	None	None
128MB	(1) 8M x 64	(1) 8M x 64	None	None
128MB	(1) 4M x 64	(1) 4M x 64	(1) 4M x 64	(1) 4M x 64
136MB	(1) 16M x 64	(1) 1M x 64	None	None
144MB	(1) 16M x 64	(1) 2M x 64	None	None
176MB	(1) 16M x 64	(1) 2M x 64	(1) 2M x 64	(1) 2M x 64
192MB	(1) 16M x 64	(1) 8M x 64	None	None
192MB	(1) 8M x 64	(1) 8M x 64	(1) 8M x 64	None
256MB	(1) 16M x 64	(1) 16M x 64	None	None
256MB	(1) 8M x 64	(1) 8M x 64	(1) 8M x 64	(1) 8M x 64
272MB	(1) 16M x 64	(1) 16M x 64	(1) 1M x 64	(1) 1M x 64
288MB	(1) 16M x 64	(1) 16M x 64	(1) 2M x 64	(1) 2M x 64
320MB	(1) 16M x 64	(1) 16M x 64	(1) 4M x 64	(1) 4M x 64
384MB	(1) 16M x 64	(1) 16M x 64	(1) 16M x 64	None
512MB	(1) 16M x 64	(1) 16M x 64	(1) 16M x 64	(1) 16M x 64
Note: Board accepts EDO & SDRAM memory.

CACHE CONFIGURATION

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

CPU SPEED SELECTION
CPU speed	Clock speed	Multiplier	JP5	JP6	JP7	JP8	JP35
233MHz	66MHz	3.5x	Closed	Open	Closed	Open	Open
266MHz	66MHz	4x	Open	Closed	Closed	Closed	Open
300MHz	66MHz	4.5x	Open	Closed	Closed	Open	Open
333MHz	66MHz	5x	Open	Open	Closed	Closed	Open