ISA 486 Motherboard Settings and Configuration

Processor	80486SX/80487SX/80486DX
Processor Speed	16/20/25/33MHz
Chip Set	OPTI
Max. Onboard DRAM	32MB
Cache	None
BIOS	AMI
Dimensions	223mm x 203mm
I/O Options	None
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	H1	Power LED & keylock	H4
Turbo switch	H2	Speaker	H5
Turbo LED	H3	External battery	J1

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) 1 M x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
32MB	(4) 4M x 9	(4) 4M x 9

CPU TYPE CONFIGURATION
Type	JP3	JP4	JP5
80486SX	Open	pins 2 & 3 closed	Open
80487SX	pins 2 & 3 closed	pins 1 & 2 closed	Closed
80486DX	pins 1 & 2 closed	pins 1 & 2 closed	Closed