Processor	80486SX/80487SX/80486DX2
Processor Speed	33/66(internal)MHz
Chip Set	Headland
Max. Onboard DRAM	32MB
Cache	128KB
BIOS	ICL
Dimensions	432mm x 368mm
I/O Options	Microphone port, headphone port, VGA port, PS/2 port, SCSI port, AUI port, 10 base T port, VGA feature connector, serial/parallel connector, floppy drive interfaces (2), SCSI interface, CD audio connector, riser slot
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Microphone port	CN1	Floppy drive interface	CN11
Headphone port	CN2	Floppy drive interface	CN12
VGA port	CN3	SCSI interface	CN13
PS/2 mouse port	CN4	Chassis fan power	J1
SCSI port	CN5	Speaker	J2
AUI port	CN6	Chassis fan power	J3
10 base T port	CN7	Front panel connector	J4
VGA feature connector	CN8	CD audio connector	T9
Serial/parallel connector	CN9	Reset switch	T29
Cache connector	CN10	Riser Card	SL1

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
	Factory configured - do not alter	CN14	N/A
»	On board VGA enabled	T12	Open
	On board VGA disabled	T12	pins 2 & 3 closed
»	System lock disabled	T14	pins 1 & 2 closed
	System lock enabled	T14	pins 2 & 3 closed
»	CMOS memory normal operation	T21	Open
	CMOS memory clear	T21	Closed
»	Boot block disabled	T900	Open
	Boot block enabled	T900	Closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
4MB	(4) 1M x 9	NONE
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
20MB	(4) 4M x 9	(4) 1M x 9
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	CN10
128KB	Module installed
Note: There are two CN10 connectors.

CACHE JUMPER CONFIGURATION
Setting	T32
Installed	Open
Not installed	Closed
Note: There are two T32 shown on the diagram. Depending on board revision, the jumper will be located in either place.

VRAM CONFIGURATION

Note: VRAM is factory installed and is not configurable.