Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive
Processor Speed	25/33/50(internal)/66(internal)MHz
Chip Set	AST
Max. Onboard DRAM	32MB
Cache	None
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	PS/2 mouse port, floppy drive interface, IDE interface, parallel port, serial ports (2), VGA port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
PS/2 mouse port	CN1	Power LED & keylock (not used)	E12
Serial port 2	CN2	IDE interface LED (not used)	E13
Serial port 1	CN3	IDE interface	J22
Parallel port	CN4	Floppy drive interface	J24
VGA port	CN5	Chassis fan power	J28
Reset switch (not used)	E11	Riser card	SL1

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Parallel port IRQ select IRQ7	E1	pins 1 & 2 closed
	Parallel port IRQ select IRQ5	E1	pins 2 & 3 closed
»	On board video enabled	E3	Closed
	On board video disabled	E3	Open
»	Monitor type select color	E4	Open
	Monitor type select monochrome	E4	Closed
»	CMOS memory normal operation	E5	Open
	CMOS memory clear	E5	Closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
4MB	(1) 512K x 36	(1) 512K x 36
4MB	(1) 1M x 36	NONE
5MB	(1) 1M x 36	(1) 256K x 36
6MB	(1) 1M x 36	(1) 512K x 36
8MB	(1) 1M x 36	(1) 1M x 36
9MB	(1) 2M x 36	(1) 256K x 36
10MB	(1) 2M x 36	(1) 512K x 36
12MB	(1) 2M x 36	(1) 1M x 36
16MB	(1) 2M x 36	(1) 2M x 36
17MB	(1) 4M x 36	(1) 256K x 36
18MB	(1) 4M x 36	(1) 512K x 36
20MB	(1) 4M x 36	(1) 1M x 36
24MB	(1) 4M x 36	(1) 2M x 36
32MB	(1) 4M x 36	(1) 4M x 36

CPU SPEED CONFIGURATION
Speed	E2
25MHz	Closed
33MHz	Open
50iMHz	Closed
66IMHz	Open

CPU TYPE CONFIGURATION
Type	E6	E7	E8	E9	E10
80486SX (PQFP)	1 & 2	Closed	2 & 3	1 & 2	2 & 3
80486SX (PGA)	1 & 2	Open	1 & 2	2 & 3	1 & 2
80487SX, ODP	1 & 2	Closed	2 & 3	1 & 2	2 & 3
80486DX,DX2,ODPR	1 & 2	Closed	1 & 2	2 & 3	2 & 3
Pentium Overdrive	2 & 3	Closed	2 & 3	1 & 2	2 & 3
Note: Pins designated should be in the closed position.