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	Fax/modem, floppy drive interface, IDE interface, multi-function connector (PS/2 mouse, PS/2 keyboard, power LED), parallel port, proprietary riser card, serial port, VGA port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Floppy drive interface	J1	External battery	JP9
IDE interface	J2	Speaker	JP11
Main board power connector	J7 & J8	Multi-function connector	P1
RJ11 modem interface	J10 & J11	Parallel port	P2
Proprietary riser card connection	JA-1	Serial port	P3
IDE interface LED	JP6	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 LPT2/IRQ5 (278-27Fh)	JP13	pins 2 & 3 closed
»	Flash BIOS programable via network disabled	JP14	pins 1 & 2 closed
	Flash BIOS programable 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

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

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