Different motherboard connectors pinouts

• AT Backup Battery connector 
• AT LED/Keylock connector 
• IRDA connector for Abit (at least BE6-xxx), Epox motherboards
• IRDA connector for FIC FA-11 motherboard (and others)
• Motherboard CPU Cooling fan connector 
• PC Speaker connector 
• Turbo LED connector 
• USB internal motheboard connector used for card-edge bracket additinal USB ports

• GeekPort connector The GeekPort is a connector available at Be´s BeBox computers. This is a dream for all hobby engineers who like to connect the computer to the coffee machine.

• SUN SROMBO Connector Available on SUN SPARCengine motherboards. Seems to be for SUN internal factory tests/programming.
• SUN SROMBOlite Connector Available on SUN SPARCengine motherboards. Seems to be for SUN internal factory tests/programming
• Sun Attachment Unit Interface (AUI) connector 

• ATX Form Factor card The ATX Form Factor Card is used to upgrade AT motherboards to meet ATX standards and support PC97, PC98 specificatioin.
• Amiga Video Expansion connector 
• Atari 5200,7800 Expansion connector 
• Atari Cartridge Ports connectors Atari 2600 , 5200, 7800 and others cartridge port connectors
• Atari Falcon030 DSP Port 
• C128 Expansion Bus connector Available at the Commodore 128
• C16/+4 Expansion Bus connector Available on Commodore C16, C116 and +4 computers
• C64 Cartridge Expansion connector 
• CDTV Diagnostic Slot connector 
• CDTV Expansion Slot connector 
• MSX Expansion connector 
• Spectravideo SVI318/328 Expansion Bus connector 50 pin MALE EDGE connector at the computer
• ZX Spectrum AY-3-8912 connector The AY38912 sound chip can be found on the Spectrum 128, +2 and +3 computers
• ZX Spectrum ULA connector Can be found at Sinclair ZX Spectrum´s, I think