3486U Motherboard Settings and Configuration

Processor	80386DX/80486SX/80487SX/80486DX/80486DX2
Processor Speed	20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set	UNI
Max. Onboard DRAM	32MB
Cache	32/64/128/256KB
BIOS	AMI
Dimensions	254mm x 218mm
I/O Options	None
NPU Options	80387DX

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J4	Turbo LED	JP15
Power LED & keylock	J5	Turbo switch	JP17
Speaker	J6	Reset switch	JP18

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	JP1	Closed
	Monitor type select monochrome	JP1	Open
»	CMOS memory normal operation	JP2	pins 1 & 2 closed
	CMOS memory clear	JP2	pins 2 & 3 closed
»	CPU type select all CPU types	JP3	Closed
	CPU type select 80386DX only	JP3	Open

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
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
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	TAG
32KB	(4) 8K x 8	NONE	(1) 8K x 8
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8
128KB	(4) 32K x 8	NONE	(1) 8K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP5	JP6	JP7	JP8
32KB	Open	pins 2 & 3 closed	Open	Open
64KB	Closed	pins 1 & 2 closed	Open	Open
128KB	Closed	pins 1 & 2, 3 & 4 closed	Closed	Open
256KB	Closed	pins 1 & 2, 4 & 5 closed	Closed	Closed

CPU TYPE CONFIGURATION
Type	JP4	JP9	JP10	JP12	JP14	JP16
80386	Open	1 & 2	2 & 3	2 & 3	Open	2 & 3
80486	Closed	2 & 3	1 & 2	1 & 2	2 & 3	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JP13
80386DX	Open
80486SX (PQFP)	Open
80486SX (PGA)	pins 5 & 6, 9 & 10 closed
80487SX	pins 2 & 3, 4 & 5, 6 & 7, 8 & 9 closed
80486DX (PQFP)	Open
80486DX (PGA)	pins 1 & 2, 4 & 5, 6 & 7, 9 & 10 closed
80486DX2	pins 1 & 2, 4 & 5, 6 & 7, 9 & 10 closed