IBM CORPORATION
APTIVA 2142 TYPE A-2
| Device Type | Mainboard | 
| Processor | Pentium II | 
| Processor Speed | 233/266MHz | 
| Chip Set | Unidentified | 
| Video Chip Set | ATI | 
| Maximum Onboard Memory | 384MB (SDRAM supported) | 
| Maximum Video Memory | 4MB (SGRAM supported) | 
| Cache | 512KB | 
| BIOS | Unidentified | 
| Dimensions | 305mm x 244mm | 
| I/O Options | 32-bit PCI slots (3), floppy drive interface, game/MIDI port, IDE interfaces (2), parallel port, PS/2 mouse port, serial port, VGA feature connector, VGA port, USB connectors (2), ATX power connector, line in, line out, microphone in, audio in – CD/DVD-ROM | 
| NPU Options | None | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| ATX power connector | ATX | Parallel port | J10 | 
| PS/2 mouse port | J1A | Audio in – CD/DVD-ROM | J11 | 
| Modem audio in | J2 | TV out connector | J13 | 
| TV audio in | J3 | AC-3 connector | J14 | 
| Audio amplifier connector | J4 | VGA feature connector | J15 | 
| Serial port 1 | J5 | Chassis fan power | J16 | 
| Line out | J6A | Floppy drive interface | J19 | 
| Line in | J6B | Power, power LED, IDE LED | J22 | 
| Microphone in | J6C | Media console connector | J23 | 
| VGA port | J7 | IDE interface 2 | J24 | 
| USB connector 1 | J8A | IDE interface 1 | J25 | 
| USB connector 2 | J8B | 32-bit PCI slots | PC1 – PC3 | 
| Game/MIDI port | J9 | ||
| Note: The location of J14 is unidentified. | |||
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| On board buzzer enabled | J21 | Pins 1 & 2 closed | |
| On board buzzer disabled | J21 | Pins 2 & 3 closed | |
| Floppy drive write enabled | JP1 | Pins 1 & 2 closed | |
| Floppy drive write disabled | JP1 | Pins 2 & 3 closed | |
| » | On board video enabled | JP2 | Pins 2 & 3 closed | 
| On board video disabled | JP2 | Pins 1 & 2 closed | |
| » | CMOS memory normal operation | JP3 | Pins 2 & 3 closed | 
| CMOS memory clear | JP3 | Pins 1 & 2 closed | |
| DIMM CONFIGURATION | |||
| Size | Bank 0 | Bank 1 | Bank 2 | 
| 8MB | (1) 1M x 64 | None | None | 
| 16MB | (1) 2M x 64 | None | None | 
| 16MB | (1) 1M x 64 | (1) 1M x 64 | None | 
| 24MB | (1) 2M x 64 | (1) 1M x 64 | None | 
| 24MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 | 
| 32MB | (1) 4M x 64 | None | None | 
| 32MB | (1) 2M x 64 | (1) 1M x 64 | (1) 1M x 64 | 
| 32MB | (1) 2M x 64 | (1) 2M x 64 | None | 
| DIMM CONFIGURATION (CON’T) | |||
| Size | Bank 0 | Bank 1 | Bank 2 | 
| 40MB | (1) 4M x 64 | (1) 1M x 64 | None | 
| 40MB | (1) 2M x 64 | (1) 2M x 64 | (1) 1M x 64 | 
| 48MB | (1) 4M x 64 | (1) 1M x 64 | (1) 1M x 64 | 
| 48MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 | 
| 56MB | (1) 4M x 64 | (1) 2M x 64 | (1) 1M x 64 | 
| 64MB | (1) 8M x 64 | None | None | 
| 64MB | (1) 4M x 64 | (1) 2M x 64 | (1) 2M x 64 | 
| 64MB | (1) 4M x 64 | (1) 4M x 64 | None | 
| 72MB | (1) 8M x 64 | (1) 1M x 64 | None | 
| 72MB | (1) 4M x 64 | (1) 4M x 64 | (1) 1M x 64 | 
| 80MB | (1) 8M x 64 | (1) 1M x 64 | (1) 1M x 64 | 
| 80MB | (1) 8M x 64 | (1) 2M x 64 | None | 
| 80MB | (1) 4M x 64 | (1) 4M x 64 | (1) 2M x 64 | 
| 96MB | (1) 8M x 64 | (1) 2M x 64 | (1) 2M x 64 | 
| 96MB | (1) 8M x 64 | (1) 4M x 64 | None | 
| 96MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 | 
| 112MB | (1) 8M x 64 | (1) 4M x 64 | (1) 2M x 64 | 
| 128MB | (1) 16M x 64 | None | None | 
| 128MB | (1) 8M x 64 | (1) 8M x 64 | None | 
| 136MB | (1) 16M x 64 | (1) 1M x 64 | None | 
| 136MB | (1) 8M x 64 | (1) 8M x 64 | (1) 1M x 64 | 
| 144MB | (1) 16M x 64 | (1) 1M x 64 | (1) 1M x 64 | 
| 144MB | (1) 16M x 64 | (1) 2M x 64 | None | 
| 144MB | (1) 8M x 64 | (1) 8M x 64 | (1) 2M x 64 | 
| 152MB | (1) 16M x 64 | (1) 2M x 64 | (1) 1M x 64 | 
| 160MB | (1) 16M x 64 | (1) 2M x 64 | (1) 2M x 64 | 
| 160MB | (1) 16M x 64 | (1) 4M x 64 | None | 
| 160MB | (1) 8M x 64 | (1) 8M x 64 | (1) 4M x 64 | 
| 168MB | (1) 16M x 64 | (1) 4M x 64 | (1) 1M x 64 | 
| 176MB | (1) 16M x 64 | (1) 4M x 64 | (1) 2M x 64 | 
| 192MB | (1) 16M x 64 | (1) 4M x 64 | (1) 4M x 64 | 
| 192MB | (1) 16M x 64 | (1) 8M x 64 | None | 
| 192MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 | 
| 200MB | (1) 16M x 64 | (1) 8M x 64 | (1) 1M x 64 | 
| 208MB | (1) 16M x 64 | (1) 8M x 64 | (1) 2M x 64 | 
| 224MB | (1) 16M x 64 | (1) 8M x 64 | (1) 4M x 64 | 
| 256MB | (1) 16M x 64 | (1) 8M x 64 | (1) 8M x 64 | 
| 384MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 | 
| Note: Board accepts SDRAM memory. | |||
| CACHE CONFIGURATION | 
| Note: 512KB cache is located on the Pentium II CPU. | 
| VIDEO MEMORY CONFIGURATION | 
| Note: To increase video memory from 2MB to 4MB, install upgrade in J17. | 
| CPU SPEED SELECTION | |||
| CPU speed | Clock speed | Multiplier | JP7 | 
| 233MHz | 66MHz | 3.5x | Pins 1 & 2, 5 & 6 closed | 
| 266MHz | 66MHz | 4x | Pins 1 & 2, 3 & 4, 7 & 8 closed |