DELL COMPUTER CORPORATION ========================= SYSTEM V486/XX MDT Processor 80486SX/80487SX/80486DX/80486DX2 Processor 25/33/50(internal)/66(internal)MHz Speed Chip Set Headland Max. Onboard 64MB DRAM Cache None BIOS Unidentified Dimensions 330mm x 218mm I/O Options Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port NPU Options None +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | Parallel port | CN1 | IDE interface | CN5 | | connector | | | | |------------------+----------+-------------------+----------| | Serial port 1 | CN2 | VGA connector | CN6 | |------------------+----------+-------------------+----------| | Serial port 2 | CN2 | Fan connector | CN7 | |------------------+----------+-------------------+----------| | PS/2 mouse port | CN3 | IDE interface LED | CN8 | |------------------+----------+-------------------+----------| | Floppy drive | CN4 | External battery | CN9 | | interface | | connector | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |---------------------------------------+---------+----------| |>> | Mouse connector enabled at IRQ12 | J1 | Closed | |---+-----------------------------------+---------+----------| | | Mouse connector disabled | J1 | Open | |---+-----------------------------------+---------+----------| |>> | Factory configured do not alter | J2 | Closed | |---+-----------------------------------+---------+----------| |>> | Factory configured do not alter | J3 | Open | |---+-----------------------------------+---------+----------| |>> | Factory configured do not alter | J4 | Closed | |---+-----------------------------------+---------+----------| |>> | Enables password feature | J5 | Closed | |---+-----------------------------------+---------+----------| | | Disables password feature | J5 | Closed | |---+-----------------------------------+---------+----------| |>> | Enables on-board VGA controller | J6 | Closed | |---+-----------------------------------+---------+----------| | | Disables on-board VGA controller | J6 | Open | |---+-----------------------------------+---------+----------| |>> | Factory configured do not alter | J7 | Open | |---+-----------------------------------+---------+----------| |>> | Factory configured do not alter | J10 | Open | |---+-----------------------------------+---------+----------| |>> | Factory configured do not alter | J11 | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION | |------------------------------------------------------------| | Speed | J8 | J9 | |-------------------+--------------------+-------------------| | 25MHz | Open | Closed | |-------------------+--------------------+-------------------| | 33MHz | Closed | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |------+-------------+-------------+------------+------------| | 4MB | (1) 1M x 36 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE | |------+-------------+-------------+------------+------------| | 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 16MB | (1) 4M x 36 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 20MB | (1) 4M x 36 | (1) 1M x 36 | NONE | NONE | |------+-------------+-------------+------------+------------| | 24MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 28MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE | |------+-------------+-------------+------------+------------| | 36MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 52MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x | | | | | 36 | 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | VRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |------------------+--------------------+--------------------| | 1MB | (4) 256 x 4 | NONE | |------------------+--------------------+--------------------| | 2MB | (4) 256 x 4 | (4) 256 x 4 | |------------------------------------------------------------| | Note:Bank 0 is factory installed and not configurable. | +------------------------------------------------------------+