Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed	16/20/25/33/50(internal)/50/66(internal)MHz
Chip Set	Symphony
Max. Onboard DRAM	32MB
Cache	64/256KB
BIOS	AMI/DTK
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	J1	Turbo LED	J4
Turbo switch	J2	Power LED & keylock	J5
Speaker	J3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CPU speed select forced high	J2	Open
	CPU speed select switchable at keyboard	J2	pins 2 & 3 closed
»	Cache write select 0 wait states	J9	Closed
	Cache write select 1 wait state	J9	Open
»	Monitor type select monochrome	J13	pins 1 & 2 closed
	Monitor type select color	J13	pins 2 & 3 closed

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
5MB	(4) 256K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
17MB	(4) 256K x 9	(4) 4M x 9
20MB	(4) 1M x 9	(4) 4M x 9
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	Bank 0	TAG
64KB	(8) 8K x 8	(1) 8K x 8
256KB	(8) 32K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	J6	J7	J8
64KB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
256KB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed

CPU TYPE CONFIGURATION
Type	J10	J11	J12
80486SX	Open	pins 2 & 3 closed	Open
80486DX	Closed	pins 1 & 2 closed	Closed
80486DX2	Closed		Closed

CPU SPEED CONFIGURATION
Speed	J14	J15	J16	J17	J18
16MHz	Closed	Open	Open	1 & 2	Open
20MHz	Closed	Open	Open	1 & 2	Open
25MHz	Closed	Open	Open	1 & 2	Open
33MHz	Closed	Open	Open	1 & 2	Open
50iMHz	Closed	Open	Open	1 & 2	Open
50Mhz (15ns cache)	Open	Closed	Open	2 & 3	Closed
50Mhz (20ns cache)	Closed	Closed	Closed	2 & 3	Closed
66iMHz	Closed	Open	Open	1 & 2	Open
Note: Pins designated should be in the closed position.