| View Source | |
| # ACER, INC. | |
| ACERALTOS 900K (M11C) (IDUN), M11C (IDUN) | |
| Device Type Mainboard | |
| Processor Pentium II | |
| Processor Speed 233/266MHz | |
| Chip Set Intel 440FX | |
| Video Chip Set Unidentified | |
| Maximum Onboard 512MB | |
| Memory | |
| Maximum Video 2MB | |
| Memory | |
| 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 | |
| IMG 1 | |
| +------------------------------------------------------------+ | |
| | CONNECTIONS | | |
| |------------------------------------------------------------| | |
| | Purpose | Location | Purpose | Location | | |
| |-------------------+----------+------------------+----------| | |
| | ATX power | ATX | SCSI-2 interface | CN18 | | |
| | connector | | | | | |
| |-------------------+----------+------------------+----------| | |
| | 5v power | CN1 | Floppy drive | CN20 | | |
| | | | interface | | | |
| |-------------------+----------+------------------+----------| | |
| | RDM connector | CN3 | Serial port 1 | CN21 | | |
| |-------------------+----------+------------------+----------| | |
| | RDM connector | CN4 | Serial port 2 | CN22 | | |
| |-------------------+----------+------------------+----------| | |
| | USB connector 1 | CN5 | Wide SCSI | CN23 | | |
| | | | interface | | | |
| |-------------------+----------+------------------+----------| | |
| | USB connector 2 | CN5A | IDE interface 1 | CN24 | | |
| |-------------------+----------+------------------+----------| | |
| | 3.3v power | CN6 | IDE interface | CN25 | | |
| | | | LED | | | |
| |-------------------+----------+------------------+----------| | |
| | 420W power | CN7 | Reset, turbo LED | CN26 | | |
| | connector | | keylock | | | |
| |-------------------+----------+------------------+----------| | |
| | 250W power | CN8 | Speaker | CN27 | | |
| | connector | | | | | |
| |-------------------+----------+------------------+----------| | |
| | Chassis intrusion | CN9 | Power LED | CN28 | | |
| | connector | | | | | |
| |-------------------+----------+------------------+----------| | |
| | Thermal sensor | CN10 | IDE interface 2 | CN29 | | |
| | connector | | | | | |
| |-------------------+----------+------------------+----------| | |
| | Soft off power | CN11 | VGA feature | CN30 | | |
| | supply | | connector | | | |
| |-------------------+----------+------------------+----------| | |
| | Ethernet 10BaseT | CN12 | Chassis fan | FA1 | | |
| | connector | | power | | | |
| |-------------------+----------+------------------+----------| | |
| | Parallel port | CN13 | Chassis fan | FA2 | | |
| | | | power | | | |
| |-------------------+----------+------------------+----------| | |
| | VGA port | CN13A | Chassis fan | FA3 | | |
| | | | power | | | |
| |-------------------+----------+------------------+----------| | |
| | Redundant power | CN14 | Chassis fan | FA4 | | |
| | supply connector | | power | | | |
| |-------------------+----------+------------------+----------| | |
| | 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 | JP3 | Unidentified | | |
| | | alter | | | | |
| |---+---------------------------------+-------+--------------| | |
| | » | 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 | JP6 | Pins 2 & 3 | | |
| | | SCSI select utility | | 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 | JP12 | Pins 1 & 2 | | |
| | | enabled | | closed | | |
| |---+---------------------------------+-------+--------------| | |
| | | Flash BIOS write protect | JP12 | Pins 2 & 3 | | |
| | | disabled | | 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 | None | None | | |
| | | | 64 | | | | |
| |-------+-------------+------------+------------+------------| | |
| | 48MB | (1) 2M x 64 | (1) 2M x | (1) 2M x | None | | |
| | | | 64 | 64 | | | |
| |-------+-------------+------------+------------+------------| | |
| | 64MB | (1) 2M x 64 | (1) 2M x | (1) 2M x | (1) 2M x | | |
| | | | 64 | 64 | 64 | | |
| |-------+-------------+------------+------------+------------| | |
| | 32MB | (1) 4M x 64 | None | None | None | | |
| |-------+-------------+------------+------------+------------| | |
| | 64MB | (1) 4M x 64 | (1) 4M x | None | None | | |
| | | | 64 | | | | |
| |-------+-------------+------------+------------+------------| | |
| | 96MB | (1) 4M x 64 | (1) 4M x | (1) 4M x | None | | |
| | | | 64 | 64 | | | |
| |-------+-------------+------------+------------+------------| | |
| | 128MB | (1) 4M x 64 | (1) 4M x | (1) 4M x | (1) 4M x | | |
| | | | 64 | 64 | 64 | | |
| |-------+-------------+------------+------------+------------| | |
| | 64MB | (1) 8M x 64 | None | None | None | | |
| |-------+-------------+------------+------------+------------| | |
| | 128MB | (1) 8M x 64 | (1) 8M x | None | None | | |
| | | | 64 | | | | |
| |-------+-------------+------------+------------+------------| | |
| | 192MB | (1) 8M x 64 | (1) 8M x | (1) 8M x | None | | |
| | | | 64 | 64 | | | |
| |-------+-------------+------------+------------+------------| | |
| | 256MB | (1) 8M x 64 | (1) 8M x | (1) 8M x | (1) 8M x | | |
| | | | 64 | 64 | 64 | | |
| |-------+-------------+------------+------------+------------| | |
| | 128MB | (1) 16M x | None | None | None | | |
| | | 64 | | | | | |
| |-------+-------------+------------+------------+------------| | |
| | 256MB | (1) 16M x | (1) 16M x | None | None | | |
| | | 64 | 64 | | | | |
| |-------+-------------+------------+------------+------------| | |
| | 384MB | (1) 16M x | (1) 16M x | (1) 16M x | None | | |
| | | 64 | 64 | 64 | | | |
| |-------+-------------+------------+------------+------------| | |
| | 512MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x | | |
| | | 64 | 64 | 64 | 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 | | |
| +------------------------------------------------------------+ |