Processor	80486SX/80487SX/80486DX/80486DX2
Processor Speed	25/33/50(internal)/66(internal)MHz
Chip Set	VIA
Max. Onboard DRAM	32MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	PS/2 mouse port, parallel port, serial ports (2), VGA port, VGA feature connector, floppy drive interface, IDE interface, riser slot
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
PS/2 mouse port	CN2	Turbo switch	J19
Serial port 1	CN3	Turbo LED	J20
Serial port 2	CN4	Reset switch	J21
Parallel port	CN5	Speaker	J22
VGA port	CN6	Power LED & keylock	J23
Floppy drive interface	CN8	IDE interface LED	J45
IDE interface	CN9	Riser Card	SL1
VGA feature connector	J13

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select monochrome/EGA/VGA	J4	Open
	Monitor type select color	J4	Closed
»	Factory configured - do not alter	J7	Open
»	On board VGA enabled	J10	pins 1 & 2 closed
	On board VGA disabled	J10	pins 2 & 3 closed
»	Factory configured - do not alter	J12	N/A
»	Password normal operation	J25	Open
	Password reset	J25	Closed
»	Factory configured - do not alter	JC5	N/A
»	Floppy drive type select 1.44MB	JF1	pins 2 & 3 closed
	Floppy drive type select 2.88MB	JF1	pins 1 & 2 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(1) 256K x 36	NONE
2MB	(1) 256K x 36	(1) 256K x 36
4MB	(1) 1M x 36	NONE
5MB	(1) 1M x 36	(1) 256K x 36
8MB	(1) 1M x 36	(1) 1M x 36
16MB	(1) 4M x 36	NONE
17MB	(1) 4M x 36	(1) 256K x 36
20MB	(1) 4M x 36	(1) 1M x 36
32MB	(1) 4M x 36	(1) 4M x 36

CACHE CONFIGURATION
Size	Bank 0	Bank 1
64KB	(4) 8K x 8	(4) 8K x 8
128KB	(4) 32K x 8	NONE
256KB	(4) 32K x 8	(4) 32K x 8

CPU TYPE CONFIGURATION
Type	J11	JC1	JC2	JC3	JC4
80486SX PQFP	2 & 3	2 & 3	2 & 3	2 & 3	Open
80486SX PGA	1 & 2	2 & 3	2 & 3	2 & 3	Open
80487SX	1 & 2	1 & 2	1 & 2	2 & 3	2 & 3
80486DX	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
80486DX2	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed	JK1
25MHz	pins 5 & 6 closed
33MHz	pins 1 & 2 closed
50iMHz	pins 5 & 6 closed
66iMHz	pins 1 & 2 closed