Processor	80486SX/80487DX/80486DX/80486DX2
Processor Speed	25/33/50(internal)/66(internal)MHz
Chip Set	C & T
Max. Onboard DRAM	64MB
Cache	NONE
BIOS	NEC
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface, IDE interface, multifunction connector (PS/2 mouse, PS/2 keyboard, power LED), parallel port, proprietary ISA riser card slot, serial port, VGA port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Proprietary riser card connector	JA-1	Speaker	JP11
Floppy drive interface	J1	Mutifunction connector	P1
IDE interface	J2	Parallel port	P2
IDE interface LED	JP6	Serial port	P3
External battery	JP9	VGA port	P4

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Parallel port (P2) select LPT1/IRQ7 (378-37Fh)	JP13	pins 1 & 2 closed
	Parallel port (P2) select LPT1/IRQ5 (278-27Fh)	JP13	pins 2 & 3 closed
»	Flash BIOS programmable via network disabled	JP14	pins 1 & 2 closed
	Flash BIOS programmable via network enabled	JP14	pins 2 & 3 closed
»	Onboard video enabled	SW1/1	Off
	Onboard video disabled	SW1/1	On
»	Floppy interface (J1) enabled	SW1/2	Off
	Floppy interface (J1) disabled	SW1/2	On
»	System password enabled	SW1/3	Off
	System password disabled & cleared	SW1/3	On
»	Flash BIOS write enabled	SW1/4	Off
	Flash BIOS write disabled	SW1/4	On

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(1) 1M x 36	NONE	NONE	NONE
5MB	(1) 1M x 36	(1) 256K x 36	NONE	NONE
6MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	NONE
7MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
9MB	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36	NONE
10MB	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
13MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 256K 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
17MB	(1) 4M x 36	(1) 256K x 36	NONE	NONE
18MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	NONE
19MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
20MB	(1) 4M x 36	(1) 1M x 36	NONE	NONE
21MB	(1) 4M x 36	(1) 1M x 36	(1) 256K x 36	NONE
22MB	(1) 4M x 36	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	NONE
25MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
33MB	(1) 4M x 36	(1) 4M x 36	(1) 256K x 36	NONE
34MB	(1) 4M x 36	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36
36MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	NONE
37MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	(1) 256K x 36
40MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE
49MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 256K x 36
52MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36

CPU TYPE CONFIGURATION
Type	JP1	JP2	JP12
80486SX PQFP	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
80486SX PGA	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
80487SX PGA	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
80486DX PGA	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
80486DX2 PGA	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed

CPU SPEED CONFIGURATION
Clock Speed	JP15
25/50i MHz	pins 1 & 2 closed
33/66i MHz	pins 2 & 3 closed