Processor	80486SX/80486DX/80486DX2
Processor Speed	25/33/50(internal)/66(internal)MHz
Chip Set	Unidenitifed
Max. Onboard DRAM	32MB
Cache	128KB
BIOS	Unidenitifed
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slots (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J3	Front panel connector	J21
Speaker	J4	32-bit VESA local bus slots	SL1 & SL1

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	JP1	N/A
»	Factory configured - do not alter	JP3	Open
»	Factory configured - do not alter	JP10	pins 1 & 2 closed
»	CMOS memory normal operation	JP11	pins 1 & 2 closed
	CMOS memory clear	JP11	pins 2 & 3 closed
»	Battery type select internal	JP12	pins 1 & 2 closed
	Battery type select external	JP12	pins 2 & 3 closed
»	VESA card select does not support write back cache	JP14	pins 1 & 2 closed
	VESA card select supports write back cache	JP14	pins 2 & 3 closed
»	Factory configured - do not alter	JP15	N/A
»	Factory configured - do not alter	JP19	N/A

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(4) 256K x 9	NONE
2MB	(4) 256K x 9	(4) 256K x 9
2MB	(4) 512K x 9	NONE
4MB	(4) 512K x 9	(4) 512K x 9
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

CACHE CONFIGURATION
Size	Bank 0	TAG
128KB	(4) 32K x 8	(2) 8K x 8
128KB	(4) 32K x 9	(2) 8K x 9

CACHE JUMPER CONFIGURATION
Size	JP5	JP6	JP7	JP8
32K x 8	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
32K x 9	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed

CPU UPGRADE CONFIGURATION
Type	JP2
None installed	pins 1 & 2, 4 & 5 closed
80486SX/DX/DX2 series installed	pins 2 & 3, 4 & 5 closed
Note: There is a PQFP CPU installed but the location is unidentified. These CPU types are installed in the PGA socket.

CPU SPEED CONFIGURATION
Speed	JP16	JP17	JP18
25MHz	Open	Open	Closed
33MHz	Closed	Closed	Open
50iMHz	Open	Open	Closed
66iMHz	Closed	Closed	Open

BUS SPEED CONFIGURATION
CPU speed	JP4	JP13	JP20
<= 33MHz	pins 2 & 3 closed	pins 1 & 2 closed	Open
> 33MHz	pins 1 & 2 closed	pins 2 & 3 closed	Closed