Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium
Processor Speed	25/33/50(internal)/66(internal)MHz
Chip Set	ATI
Max. Onboard DRAM	128MB
Cache	64/256KB (Located on the external cache module)
BIOS	AST
Dimensions	355mm x 304mm
I/O Options	Cache/Pentium upgrade module, floppy drive interface (2), IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, video port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Bus mouse port	J12	Manufacturer’s test header	J23
Parallel port	J13	Floppy drive interface 1 & 2	J24
Serial port 1	J14	Floppy drive interface 3	J25
Personality/feature connector	J15	External battery	J26
Personality/feature connector	J16	Speaker	J27
Pentium/Cache module upgrade	J17	Chassis fan power	J28
SVGA monitor port	J18	Front console header	J29
VGA port	J19	Manufacturer’s test header	J30
Serial port 2	J20	IDE interface LED	J35
IDE interface	J22	Personality/feature connector	J46
Note:The personality/feature connectors alow various network modules to be added to the system.

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Factory configured - do not alter	E2	Open
»	Pariity checking enabled	E3	Closed
	Pariity checking disabled	E3	Open
»	Flash BIOS voltage 12V	E5	pins 2 & 3 closed
	Flash BIOS voltage 5V	E5	pins 1 & 2 open
»	VGA enabled	SW1/switch 1	On
	VGA disabled	SW1/switch 1	Off
»	Factory configured - do not alter	SW1/switch 2	N/A
»	CMOS memory normal operation	SW1/switch 3	Off
	CMOS memory clear	SW1/switch 3	On
»	BIOS normal operation	SW1/switch 4	Off
	BIOS forced update	SW1/switch 4	On
»	Password override	SW1/switch 5	Off
	Password inhibited	SW1/switch 5	On
»	Factory configured - do not alter	SW1/switch 6	Off
»	Factory configured - do not alter	SW1/switch 7	Off
»	Factory configured - do not alter	SW1/switch 8	Off
»	Factory configured - do not alter	SW1/switch 9	Off
»	Monitor type select color	SW1/switch 10	On
	Monitor type select monochrome	SW1/switch 10	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
2MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
4MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
4MB	(1) 2M x 36	(1) 2M x 36	NONE	NONE
6MB	(1) 1M x 36	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36
8MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
8MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
10MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36
12MB	(1) 2M x 36	(1) 2M x 36	(1) 4M x 36	(1) 4M x 36
16MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
16MB	(1) 8M x 36	(1) 8M x 36	NONE	NONE
18MB	(1) 1M x 36	(1) 1M x 36	(1) 8M x 36	(1) 8M x 36
20MB	(1) 2M x 36	(1) 2M x 36	(1) 8M x 36	(1) 8M x 36
24MB	(1) 4M x 36	(1) 4M x 36	(1) 8M x 36	(1) 8M x 36
32MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
32MB	(1) 16M x 36	(1) 16M x 9	NONE	NONE
34MB	(1) 1M x 36	(1) 1M x 36	(1) 16M x 36	(1) 16M x 36
36MB	(1) 2M x 36	(1) 2M x 36	(1) 16M x 36	(1) 16M x 36
40MB	(1) 4M x 36	(1) 4M x 36	(1) 16M x 36	(1) 16M x 36
48MB	(1) 8M x 36	(1) 8M x 36	(1) 16M x 36	(1) 16M x 36
64MB	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36
64MB	(1) 32M x 36	(1) 32M x 36	NONE	NONE
66MB	(1) 1M x 36	(1) 1M x 36	(1) 32M x 36	(1) 32M x 36
68MB	(1) 2M x 36	(1) 2M x 36	(1) 32M x 36	(1) 32M x 36
72MB	(1) 4M x 36	(1) 4M x 36	(1) 32M x 36	(1) 32M x 36
80MB	(1) 8M x 36	(1) 8M x 36	(1) 32M x 36	(1) 32M x 36
96MB	(1) 16M x 36	(1) 16M x 36	(1) 32M x 36	(1) 32M x 36
128MB	(1) 32M x 36	(1) 32M x 36	(1) 32M x 36	(1) 32M x 36

CPU TYPE CONFIGURATION
PQFP	PGA	Pentium	E1	E4	E6	E7
80486SX	None	None	pins 2 & 3	pins 1 & 2	pins 1 & 2	pins 1 & 2
80486SX	80487SX	None	pins 2 & 3	pins 1 & 2	pins 1 & 2	pins 1 & 2
80486SX	ODP486SX	None	pins 2 & 3	pins 1 & 2	pins 1 & 2	pins 1 & 2
80486SX	80486DX/80486DX2	None	pins 1 & 2	pins 2 & 3	pins 1 & 2	pins 1 & 2
80486DX	None	None	pins 2 & 3	pins 1 & 2	pins 1 & 2	pins 1 & 2
80486DX	80486DX/80486DX2	None	pins 1 & 2	pins 2 & 3	pins 1 & 2	pins 1 & 2
80486DX	ODP486SX	None	pins 2 & 3	pins 1 & 2	pins 1 & 2	pins 1 & 2
None	80486SX	None	Open	Open	pins 2 & 3	pins 2 & 3
None	80486DX/80486DX2	None	Open	pins 2 & 3	pins 1 & 2	pins 1 & 2
None	ODP486SX	None	Open	pins 1 & 2	pins 1 & 2	pins 1 & 2
Any	None	Yes	pins 2 & 3	pins 1 & 2	pins 1 & 2	pins 1 & 2
None	None	Yes	Open	pins 1 & 2	pins 1 & 2	pins 1 & 2
Note:Pins designated should be in the closed position. Before installing the Pentium upgrade board, remove the processor in the ZIF socket at U13.

VIDEO MEMORY CONFIGURATION
Size	Bank 0	Bank 1
1MB	(2) 46256	(2) 46256
2MB	(2) 46256	(2) 46256