Processor	80486SX/80486SX2/80486DX/80486DX2/80486DX4/Pentium Overdrive
Processor Speed	25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Chip Set	Unidentified
Max. Onboard DRAM	128MB
Cache	128/256KB
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	32-bit PCI slots (1), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
VGA port	CN1	IDE interface 1	CN8
Parallel port	CN2	IDE interface 2	CN9
Serial port 2	CN3	Imageport connector	CN10
Serial port 1	CN4	VGA feature connector	CN11
PS/2 mouse port	CN5	Speaker	JP1
Optional power connector	CN6	LED connector	JP2
Floppy drive interface	CN7	32-bit PCI slot	SL1

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	L2 cache installed	J5D	pins 1 & 2 closed
	L2 cache not installed	J5D	pins 2 & 3 closed
»	Cache type select HIT	J5E	pins 1 & 2 closed
	Cache type select L2WB	J5E	pins 2 & 3 closed
»	Cache type select write through	J5F	pins 1 & 2 closed
	Cache type select write back (Pentium Overdrive)	J5F	pins 2 & 3 closed
»	Factory configured - do not alter	J6A	Closed
»	Flash BIOS mode select normal	J6B	Open
	Flash BIOS mode select recovery	J6B	Closed
»	Floppy drive interface enabled	J6C	Closed
	Floppy drive interface disabled	J6C	Open
»	Flash BIOS write protect enabled	J6D	Open
	Flash BIOS write protect disabled	J6D	Closed
»	CMOS memory normal operation	J6E	Open
	CMOS memory clear	J6E	Closed
»	Factory configured - do not alter	J7	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
16MB	(1) 2M x 36	(1) 2M x 36	NONE	NONE
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
64MB	(1) 8M x 36	(1) 8M x 36	NONE	NONE
128MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG	MD1
128KB	(4) 32K x 8	NONE	(1) 8K x 8	(1) 8K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	J5B	J5C
128KB	pins 1 & 2 closed	pins 1 & 2 closed
256KB	pins 2 & 3 closed	pins 2 & 3 closed

CPU TYPE CONFIGURATION
Type	J3
80486SX	pins 1 & 2 closed
80486SX2	pins 1 & 2 closed
80486DX	pins 2 & 3 closed
80486DX2	pins 2 & 3 closed
80486DX4	pins 2 & 3 closed
Pentium Overdrive	pins 2 & 3 closed

CPU TYPE CONFIGURATION
Type	J2	J5A
Non SL enhanced CPU	pins 2 & 3, 5 & 6 closed	pins 2 & 3 closed
SL enhanced CPU	pins 1 & 2, 4 & 5 closed	pins 1 & 2 closed

CPU SPEED CONFIGURATION
Speed	J6F
25MHz	Open
33MHz	Closed
50iMHz	Open
66iMHz	Closed
75iMHz	Open
100iMHz	Closed

CPU VOLTAGE CONFIGURATION
Voltage	J4
3.3v	pins 1 & 2 closed
5v	pins 2 & 3 closed

DMA CHANNEL CONFIGURATION
DMA	J1
DMA 1	pins 1 & 2, 4 & 5 closed
DMA 3	pins 2 & 3, 5 & 6 closed