ACERALTOS 900K (M11C) (IDCMT), M11C (IDCMT) Motherboard Settings and Configuration

Device Type	Mainboard
Processor	Pentium II
Processor Speed	233/266MHz
Chip Set	Intel 440FX
Video Chip Set	Unidentified
Maximum Onboard Memory	512MB
Maximum Video Memory	2MB
Cache	256/512KB (located on Pentium II CPU)
BIOS	Acer
Dimensions	305mm x 244mm
I/O Options	32-bit PCI slots (3), Ethernet 10BaseT connector, floppy drive interface, IDE interfaces (2), SCSI-2 interface, Wide SCSI interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, USB connectors (2), ATX power connector

CONNECTIONS
Purpose	Location	Purpose	Location
ATX power connector	ATX	SCSI-2 interface	CN18
5v power	CN1	Serial port	CN19
RDM connector	CN3	Serial port	CN19A
RDM connector	CN4	Floppy drive interface	CN20
USB connector 1	CN5	Wide SCSI interface	CN23
USB connector 2	CN5A	IDE interface 1	CN24
3.3v power	CN6	IDE interface LED	CN25
420W power connector	CN7	Reset, turbo LED keylock	CN26
250W power connector	CN8	Speaker	CN27
Chassis intrusion connector	CN9	Power LED	CN28
Thermal sensor connector	CN10	IDE interface 2	CN29
Soft off power supply	CN11	VGA feature connector	CN30
Ethernet 10BaseT connector	CN12	Chassis fan power	FA1
Parallel port	CN13	Chassis fan power	FA2
VGA port	CN13A	Chassis fan power	FA3
Redundant power supply connector	CN14	Chassis fan power	FA4
LED connector	CN15	32-bit PCI slots	PC1 - PC3
PS/2 mouse port	CN17
Note: The location of ATX is unidentified.

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	420W enabled	JP1	Pins 1 & 2 closed
	420W disabled	JP1	Pins 2 & 3 closed
»	Factory configured - do not alter	JP3	Unidentified
»	BIOS type select Acer	JP4	Pins 1 & 2 closed
	BIOS type select OEM	JP4	Pins 2 & 3 closed
»	Password disabled	JP5	Pins 2 & 3 closed
	Password enabled	JP5	Pins 1 & 2 closed
»	Termination enabled	JP6	Pins 1 & 2 closed
	Termination switchable through SCSI select utility	JP6	Pins 2 & 3 closed
»	On board video enabled	JP7	Pins 1 & 2 closed
	On board video disabled	JP7	Pins 2 & 3 closed
»	Buzzer enabled	JP8	Pins 1 & 2 closed
	Buzzer disabled	JP8	Pins 2 & 3 closed
»	Software power down enabled	JP9	Pins 2 & 3 closed
	General power supply enabled	JP9	Pins 1 & 2 closed
»	Flash BIOS write protect enabled	JP12	Pins 1 & 2 closed
	Flash BIOS write protect disabled	JP12	Pins 2 & 3 closed

DIMM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
16MB	(1) 2M x 64	None	None	None
32MB	(1) 2M x 64	(1) 2M x 64	None	None
48MB	(1) 2M x 64	(1) 2M x 64	(1) 2M x 64	None
64MB	(1) 2M x 64	(1) 2M x 64	(1) 2M x 64	(1) 2M x 64
32MB	(1) 4M x 64	None	None	None
64MB	(1) 4M x 64	(1) 4M x 64	None	None
96MB	(1) 4M x 64	(1) 4M x 64	(1) 4M x 64	None
128MB	(1) 4M x 64	(1) 4M x 64	(1) 4M x 64	(1) 4M x 64
64MB	(1) 8M x 64	None	None	None
128MB	(1) 8M x 64	(1) 8M x 64	None	None
192MB	(1) 8M x 64	(1) 8M x 64	(1) 8M x 64	None
256MB	(1) 8M x 64	(1) 8M x 64	(1) 8M x 64	(1) 8M x 64
128MB	(1) 16M x 64	None	None	None
256MB	(1) 16M x 64	(1) 16M x 64	None	None
384MB	(1) 16M x 64	(1) 16M x 64	(1) 16M x 64	None
512MB	(1) 16M x 64	(1) 16M x 64	(1) 16M x 64	(1) 16M x 64

CACHE CONFIGURATION

Note: 256KB/512KB cache is located on the Pentium II CPU.

VIDEO MEMORY CONFIGURATION
Size	Bank 0	Bank 1
1MB	(2) 256K x 16	None
2MB	(2) 256K x 16	(2) 256K x 16

CPU SPEED SELECTION
CPU speed	Clock speed	Multiplier	JP2
233MHz	66MHz	3.5x	Pins 1 & 2, 4 & 5 closed
266MHz	66MHz	4x	Pins 1 & 2, 4 & 5 closed

FLASH BIOS SELECTION
Setting		JP11
»	Controlled by software	Pins 1 & 2 closed
	5v	Open
	12v	Pins 2 & 3 closed