Processor	80486SX/SL80486SX/CX486DX/80486DX/SL80486DX/80486DX2/ SL80486DX2/80486DX4/Pentium Overdrive
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/83(internal) 100(internal)MHz
Chip Set	OPTI
Max. Onboard DRAM	128MB
Cache	128/256KB
BIOS	Unidentified
Dimensions	254mm x 218mm
I/O Options	32-bit VESA local bus slots (3), green PC connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J3	Reset switch	J7 pins 9 & 19
Green PC LED	J5	IDE interface LED	J7 pins 10 & 20
IDE interface LED	J6	Power LED & keylock	J7 pins 11 - 15
Speaker	J7 pins 1 - 4	Green PC connector	J8
Turbo switch	J7 pins 7 & 17	32-bit VESA local bus slots	SL1 - SL3
Turbo LED	J7 pins 8 & 18

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	JP1	Closed
	Monitor type select monochrome	JP1	Open
»	CMOS memory normal operation	JP2	pins 2 & 3 closed
	CMOS memory clear	JP2	pins 1 & 2 closed
	Battery type select external	JP2	Open
»	Factory configured - do not alter	JP10	N/A
»	Factory configured - do not alter	JP11	N/A
»	Factory configured - do not alter	W1	N/A

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(1) 1M x 36	NONE	NONE	NONE
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
8MB	(1) 1M x 36	NONE	(1) 1M x 36	NONE
8MB	(1) 2M x 36	NONE	NONE	NONE
12MB	(1) 1M x 36	NONE	(1) 1M x 36	(1) 1M x 36
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 4M x 36	NONE	NONE	NONE
16MB	(1) 2M x 36	NONE	(1) 2M x 36	NONE
20MB	(1) 1M x 36	(1) 4M x 36	NONE	NONE
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
32MB	(1) 8M x 36	NONE	NONE	NONE
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
64MB	(1) 16M x 36	NONE	NONE	NONE
64MB	(1) 8M x 36	NONE	(1) 8M x 36	NONE
128MB	(1) 16M x 36	(1) 16M x 36	NONE	NONE

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
128KB	(4) 32K x 8	NONE	(1) 8K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 16K x 8 or (1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP6	JP7
128KB	pins 1 & 2 closed	pins 1 & 2 closed
256KB	pins 2 & 3 closed	pins 2 & 3 closed

CACHE TYPE CONFIGURATION
Type	JP15	JP16
Write back	Closed	pins 2 & 3 closed
Write through	Open	Open

CPU TYPE CONFIGURATION
Type	RNA1	RNA2	RNA3	RNA4	W8
80486SX	Not installed	Not installed	Installed	Not installed	Closed
CX486DX	Not installed	Not installed	Not installed	Installed	Closed
80486DX	Installed	Not installed	Not installed	Not installed	Closed
80486DX2	Installed	Not installed	Not installed	Not installed	Closed
80486DX4	Installed	Not installed	Not installed	Not installed	Open
P24T	Not installed	Installed	Not installed	Not installed	Closed
Note: The 80486DX4 is only available on the PAT48PG4.

CPU TYPE CONFIGURATION
Type	RNB1	RNB2	RNB3
Cyrix series	Not installed	Not installed	Installed
80486 series	Installed	Not installed	Not installed
SL80486 series	Not installed	Installed	Not installed

CPU SPEED CONFIGURATION
Speed	JP5	JP12	JP13	JP14
25MHz	1 & 2, 5 & 6	1 & 2	Open	Open
33MHz	1 & 2, 3 & 4	1 & 2	Open	Open
40MHz	3 & 4, 5 & 6, 7 & 8	2 & 3	Open	Closed
50iMHz	1 & 2, 5 & 6	1 & 2	Open	Open
50MHz	1 & 2, 5 & 6, 7 & 8	2 & 3	Closed	Closed
66iMHz	1 & 2, 3 & 4	1 & 2	Open	Open
75iMHz	1 & 2, 5 & 6	1 & 2	Open	Open
80iMHz	3 & 4, 5 & 6, 7 & 8	2 & 3	Open	Closed
83iMHz	1 & 2, 3 & 4	1 & 2	Open	Open
100iMHz	1 & 2, 3 & 4	1 & 2	Open	Open
Note: Pins designated should be in the closed position.