Device Type	Mainboard
Processor	80486DX/80486DX2/P24T
Processor Speed	25/33/40/50(internal)/50/66(internal)MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	128MB
Maximum Video Memory	None
Cache	128/256KB
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	Local bus video slot, 32-bit VESA local bus slots (2), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Chassis fan power	C1	Local bus video slot	SL1
Speaker	C2	32-bit VESA local bus slots	SL2 & SL3
Note: The location of all other connectors is unidentified.

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Parallel port unidirectional	J20	Pins 1 & 2 closed
	Parallel port bidirectional	J20	Pins 2 & 3 closed
»	CMOS memory normal operation	J23	Open
	CMOS memory clear	J23	Closed
	Monitor type select monochrome	J25	Open
	Monitor type select color	J25	Closed
»	Factory configured - do not alter	J43	Open
»	Reset switch enabled	J46	Closed
	Reset switch disabled	J46	Open
»	Factory configured - do not alter	J53	Unidentified

SIMM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
8MB	(1) 2M x 36	None	None	None
16MB	(1) 4M x 36	None	None	None
16MB	(1) 2M x 36	(1) 2M x 36	None	None
24MB	(1) 4M x 36	(1) 2M x 36	None	None
24MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	None
24MB	(1) 2M x 36	(1) 4M x 36	None	None
32MB	(1) 8M x 36	None	None	None
32MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	None
32MB	(1) 4M x 36	(1) 4M x 36	None	None
32MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
40MB	(1) 8M x 36	(1) 2M x 36	None	None
40MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
40MB	(1) 2M x 36	(1) 4M x 36	(1) 4M x 36	None
40MB	(1) 2M x 36	(1) 8M x 36	None	None

SIMM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
48MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	None
48MB	(1) 8M x 36	(1) 4M x 36	None	None
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	None
48MB	(1) 4M x 36	(1) 8M x 36	None	None
56MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
56MB	(1) 2M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
64MB	(1) 8M x 36	(1) 4M x 36	(1) 4M x 36	None
64MB	(1) 8M x 36	(1) 8M x 36	None	None
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
72MB	(1) 2M x 36	(1) 8M x 36	(1) 8M x 36	None
80MB	(1) 8M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
80MB	(1) 4M x 36	(1) 8M x 36	(1) 8M x 36	None
96MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	None
104MB	(1) 2M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
112MB	(1) 4M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
128MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36

CACHE CONFIGURATION
Size	Bank 0
128KB	(4) 32K x 8
256KB	(4) 64K x 8

CACHE JUMPER CONFIGURATION
Size	J29	J30	J31
128KB	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 SPEED SELECTION
Speed	J34	J35	J36	J37
25MHz	Closed	Closed	Open	Closed
33MHz	Closed	Open	Closed	Closed
40MHz	Open	Open	Closed	Open
50iMHz	Closed	Closed	Open	Closed
50MHz	Open	Open	Open	Open
66iMHz	Closed	Open	Closed	Closed

CPU TYPE SELECTION
Type	J52
80486DX	Pins 2 & 3 closed
80486DX2	Pins 2 & 3 closed
P24T	Pins 1 & 2 closed

VL BUS WAIT STATE SELECTION
Setting		J51
»	0	Pins 1 & 2 closed
	1	Pins 2 & 3 closed