80486VESA (03-0027X-01) Motherboard Settings and Configuration

Device Type	Mainboard
Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed	20/25/33/40/50(internal)/50/66(internal) MHz
Chip Set	SIS
Max. Onboard DRAM	32MB
SRAM Cache	64/128/256KB
BIOS	AMI
Dimensions	254mm x 218mm
I/O Options	32-bit VESA local bus slot (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	JP1	Turbo LED	JP16
Power saving feature	JP2	Speaker	JP17
Power saving feature	JP11	Power LED & keylock	JP18
Reset switch	JP14	32-bit VESA card	S1
Turbo switch	JP15	32-bit VESA card	S2

SIMM 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
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	None
20MB	(4) 4M x 9	(4) 1M x 9
32MB	(4) 4M x 9	(4) 4M x 9

CPU TYPE CONFIGURATION
CPU Type	JP9	JP10	JP22	JP23
80486SX/DX PQFP	1 & 2, 3 & 4	1 & 2	Closed	Open
80486SX PGA	2 & 3	Open	Open	Closed
80486DX/DX2 PGA	1 & 2, 3 & 4	1 & 2	Open	Closed
80487SX/SX2 PGA	1 & 2, 3 & 4	2 & 3	Open	Closed
(2)80486DX2 PGA	1 & 2, 3 & 4	1 & 2	Open	Closed
(2)80487SX PGA	1 & 2, 3 & 4	2 & 3	Open	Closed
Note:Pins designated should be in the closed position.

VL-BUS SPEED SELECTION
Setting	JP20
<= 33MHz	Open
>33 MHz	Closed

CACHE JUMPER
Size	JP12	JP13
64KB	Open	Open
128KB	Closed	1 & 2
256KB	Closed	2 & 3
Note: Pins designated should be in the closed position.