Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed	20/25/33/50(internal)/50/66(internal)MHz
Chip Set	OPTI
Max. Onboard DRAM	128MB
Cache	64/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	Mouse connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Mouse connector	J2	Speaker	J22
Power LED & keylock	J31	Reset switch	J27

USER CONFIGURABLE SETTINGS
Function		Switch	Position
»	Factory configured - do not alter	SW1/1	Off
»	Monitor type select monochrome	SW1/2	Off
	Monitor type select color	SW1/2	On

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) 1M x 9	(4) 4M x 9
32MB	(4) 4M x 9	(4) 4M x 9
64MB	(4) 16M x 9	NONE
128MB	(4) 16M x 9	(4) 16M x 9

CACHE CONFIGURATION
Size	Bank 0
64KB	(8) 8K x 8
256KB	(8) 32K x 8

CACHE JUMPER CONFIGURATION
Size	J14	J15	J18	J19	J30
64KB	Open	Open	Open	Open	1 & 2
256KB	Closed	Closed	Closed	Closed	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	J9
80486SX	pins 2 & 3 closed
80486DX	pins 1 & 2, 3 & 4 closed
80486DX2	pins 1 & 2, 3 & 4 closed

CPU SPEED CONFIGURATION
Jumper	J3	J6	J16	J17	J30
20MHz	1 & 2	Closed	Open	Open	2 & 3
25MHz	1 & 2	Open	Open	Open	1 & 2
33MHz	1 & 2	Open	Open	Closed	1 & 2
50iMHz	1 & 2	Open	Open	Open	1 & 2
50MHz	2 & 3	Open	Closed	Closed	1 & 2
66iMHz	1 & 2	Open	Open	Closed	1 & 2
Note : When installing an 80487SX or an ODP486SX use the CPU socket labled CPU-X. Pins designated should be in the closed position.