Processor	80486DX/80486DX2
Processor Speed	20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	32MB
Maximum Video Memory	None
Cache	64/128/256KB
BIOS	Unidentified
Dimensions	254mm x 218mm
I/O Options	32-bit VESA local bus slot, serial ports (2), game interface, parallel port, floppy drive interface, IDE interface
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J2	Speaker	J11
Serial port 2	J4	Reset switch	J12
Serial port 1	J5	IDE interface LED	J13
Game interface	J6	Turbo switch	J14
Parallel port	J7	Turbo LED	J15
Floppy drive interface	J8	Power LED & keylock	J16
IDE interface	J9	32-bit VESA local bus slot	SL1

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Battery type select internal	W1	Closed
	Battery type select external	W1	Open
	Monitor type select color	W2	Closed
	Monitor type select monochrome	W2	Open
»	Factory configured - do not alter	W8	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
5MB	(4) 1M x 9	(4) 256K 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
17MB	(4) 4M x 9	(4) 256K x 9
20MB	(4) 1M x 9	(4) 4M x 9
20MB	(4) 4M x 9	(4) 1M x 9
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	Bank 0	Bank 1
64KB	(4) 8K x 8	(4) 8K x 8
128KB	(4) 32K x 8	None
256KB	(4) 32K x 8	(4) 32K x 8

CACHE TAG CONFIGURATION
Size	TAG 0	TAG 1	TAG 2
64KB	None	(1) 8K x 8	(1) 64K x 1
128KB	None	(1) 8K x 8	(1) 64K x 1
256KB	(1) 8K x 8	(1) 8K x 8	(1) 64K x 1

CACHE JUMPER CONFIGURATION
Size	W4	W5	W6	W13
64KB	Pins 2 & 3 closed	Open	Open	Pins 2 & 3 closed
128KB	Pins 1 & 2 closed	Open	Closed	Pins 1 & 2 closed
256KB	Pins 2 & 3 closed	Closed	Closed	Pins 2 & 3 closed

CACHE JUMPER CONFIGURATION (CON’T)
Size	W19	W20	W21	W22
64KB	Open	Open	Open	Open
128KB	Open	Open	Open	Closed
256KB	Open	Open	Closed	Closed

CPU SPEED SELECTION
Speed	W14	W15	W16
20MHz	Closed	Open	Open
25MHz	Open	Closed	Closed
33MHz	Open	Closed	Open
40MHz	Open	Open	Closed
50iMHz	Open	Closed	Closed
50MHz	Open	Closed	Closed
66iMHz	Open	Closed	Open

CPU TYPE SELECTION
Type	W3	W7	W9	W17	W18	W23	W24
80486DX	1 & 2	1 & 2	1 & 2	2 & 3	1 & 2	Open	2 & 3
80486DX-50	1 & 2	2 & 3	1 & 2	2 & 3	1 & 2	Closed	2 & 3
80486DX2	1 & 2	1 & 2	1 & 2	2 & 3	1 & 2	Open	2 & 3
Note: Pins designated should be in the closed position.

VL BUS WAIT STATE SELECTION
Setting		W11
	0	Open
»	1	Closed

VL BUS SPEED SELECTION
Speed	W10	W12
<= 33MHz	Open	Closed
40MHz	Closed	Open
50MHz	Open	Open