AC41644/41647 MODELS E450/X450 Motherboard Settings and Configuration

Processor	Pentium
Processor Speed	75/90/100MHz
Chip Set	OPTI
Max. Onboard DRAM	128MB
Cache	256KB (on daughterboard)
BIOS	ICL
Dimensions	330mm x 200mm
I/O Options	PS/2 mouse port, parallel port, serial ports (2), network adapter, floppy drive interface, IDE interfaces (2), proprietary riser card slot, sound in, sound out
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
3.3V power connector	E#	IDE interface (primary)	J11
Keyboard and mouse PTC	J0	IDE interface (primary)	J12
Parallel port	J2	Network adapter	J13
Serial port 1	J3	CPU fan	J15
Serial port 2	J4	Microphone in	J16
PS/2 mouse port	J5	Speaker out	J17
Hard drive LED	J6	Unidentified	J18
Front panel LEDs	J7	Reset switch	JP1 pins 1 & 2
Chassis fan power	J8	Proprietary riser card slot	SL1
Power switch	J9	Cache expansion slot	SL2
Floppy drive interface	J10

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	JP1 pins 9 & 10	Closed
»	Password disabled	JP1 pins 15 & 16	Open
	Password enabled	JP1 pins 15 & 16	Closed
»	Factory configured - do not alter	JP1 pins 17 & 18	Closed
»	BIOS write protect enabled	JP1 pins 19 & 20	Open
	BIOS write protect disabled	JP1 pins 19 & 20	Closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
8MB	(2) 1M x 36	NONE
16MB	(2) 1M x 36	(2) 1M x 36
16MB	(2) 2M x 36	NONE
24MB	(2) 1M x 36	(2) 2M x 36
32MB	(2) 2M x 36	(2) 2M x 36
32MB	(2) 4M x 36	NONE
40MB	(2) 1M x 36	(2) 4M x 36
48MB	(2) 2M x 36	(2) 4M x 36
64MB	(2) 4M x 36	(2) 4M x 36
72MB	(2) 1M x 36	(2) 8M x 36
80MB	(2) 2M x 36	(2) 8M x 36
96MB	(2) 4M x 36	(2) 8M x 36
128MB	(2) 8M x 36	(2) 8M x 36

CMOS MODE CONFIGURATION
Mode	JP1
Normal	pins 11 & 12 closed
Clear	pins 13 & 14 closed

CPU SPEED CONFIGURATION
Speed	JP1 pins 3 & 4	JP1 pins 5 & 6	JP1 pins 7 & 8
75MHz	Closed	Closed	Open
90MHz	Closed	Open	Closed
100MHz	Open	Closed	Open