Processor	80486SX/80487SX
Processor Speed	20MHz
Chip Set	None
Max. Onboard DRAM	16MB (8MB on external memory card)
Cache	64/256KB
BIOS	AMI/DTK
Dimensions	330mm x 306mm
I/O Options	32-bit external memory card slot
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Secondary fan power	J1	Speaker	J5
Power LED & keylock	J2	External battery	J9
Turbo LED	J3	32-bit external memory card	S1
Reset switch	J4
Note:External battery jumper (J9) may not be present on all boards.

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Cache enabled	J6	Open
	Cache disabled	J6	pins 1 & 2 closed
	Cache enabled/disabled switchable from keyboard	J6	pins 2 & 3 closed
»	Monitor type select monochrome	SW1/4	Off
	Monitor type select color	SW1/4	On
»	BIOS type select 27256	W3	pins 1 & 2 closed
	BIOS type select 27512	W3	pins 2 & 3 closed
»	Video BIOS caching enabled	W6	Closed
	Video BIOS caching disabled	W6	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(4) 256K x 9	NONE
2MB	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1M x 9	NONE
8MB	(4) 1M x 9	(4) 1M x 9

DRAM JUMPER/ SWITCH CONFIGURATION
Size	SW1/1	SW1/2	SW1/3	W4	W5
1MB	On	On	On	2 & 3	2 & 3
2MB	On	On	On	2 & 3	2 & 3
4MB	On	On	Off	1 & 2	1 & 2
8MB	On	Off	Off	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CACHE CONFIGURATION
Size	Bank 0	TAG
64KB	(8) 16K x 4	(2) 16K x 4
256KB	(8) 64K x 4	(2) 64K x 4

CACHE JUMPER CONFIGURATION
Size	W1	W2
64KB	pins 1 & 2 closed	pins 1 & 2 closed
256KB	pins 2 & 3 closed	pins 2 & 3 closed