Computer bus is a subsystem that transfers data between components inside a computer or between computers.

Modern computer buses can use parallel and bit-serial connections, and can be wired in either a multidrop (electrical parallel) or daisy chain topology, or connected by switched hubs, as in the case of USB.

Forward to / Apple / obsolete / obsolete computers / Sun pinouts or follow to 19 MODERN hardware pinouts.
See also RS-232 and other serial ports and interfaces pinouts
  • 124 pin (98+22) PCI 5 volt EDGE
    ACR (Advanced Communications Riser) Advanced Communications Riser (ACR) is a slot for connecting a specific hardware, such as AMR hardware, Cable Modem, DSL, Wireless, HomePNA, Ethernet, etc. This slot is a successor to AMR (Audio Modem Riser).
  • 132 pin EDGE (AGP bus)
    AGP interface AGP (Accelerated Graphics port) is a modified version of PCI bus designed to speed up transfers to video cards.
  • 98 pin (62+36)ISA EDGE male
    ISA bus ISA=Industry Standard Architecture
  • 56 pin JAMMA proprietary
    JAMMA JAMMA=Japanese Arcade Machine Manufacturers Association
  • 68 pin male
    PC Card ATA bus This specification makes it possible to share ATA & PC Card with the same connectors.

Apple Pinouts

obsolete Pinouts

  • 60 pin CNR bus
    Communication and Networking Riser (CNR) The CNR connector is the interface between the motherboard and the CNR board. The connector provides all of the necessary signals to support several different configurations of audio, modem, and/or LAN subsystems in the system
  • 198 pin (62+36/62+38) EISA EDGE
    EISA bus This file is intended to provide a basic functional overview of the EISA Bus, so that hobbyists and amateurs can design their own EISA compatible cards.
  • 56 pin JAMMA proprietary
    Electrocoin The Electrocoin standard was introduced before JAMMA (Japanese Arcade Machine Manufacturers Association) to allow various games to be connected to generic cabinets such as Silverline and Goliaths.
  • 116 pin MCA bus
    MCA 16 bit bus 
  • 172 pin MCA bus
    MCA 32 bit bus plus MCA memory-matched extensions, MCA AVEC Auxiliary Video Extension Connector
  • 58 pin EDGE male
    VESA LocalBus (VLB) VLB=VESA Local Bus. VESA=Video Electronics Standards Association.

obsolete computers Pinouts

  • 24 pin DZM 12 DREH
    +4 User port Available on Commodore +4 computer.
  • 60 pins unspecified
    Amiga 1000 Ramex 
  • Amiga 1200 CPU-port 
  • Amiga Expansion Bus A.K.A Zorro I These are the connections found at the side of the Amiga 1000 and Amiga 500 computers. They are electric and mechanical compatible with the single exception of being rotated 180 degrees looking at it from the top of the PCB this can cause trouble connecting a expansion meant for the A1000 into the A500 and vice versa. This Bus is like most Buses at this time a extension on the CPU Bus.
  • Amiga Expansion Bus Zorro II These are the connections found at the side of the Amiga computers. This Bus is like most Buses at this time a extension on the CPU Bus.
  • Amiga Expansion Bus Zorro II/III 
  • C-bus II Developed by Corolla. C-bus II is the successor to C-bus & Extended C-bus.
  • CD32 Expansion-port 
  • 24 pin DZM 12 DREH
    Commodore 64 / 128 User I/O 
  • 96 pin DIN 41612 (3x32) female
    ECB bus The ECB-bus was defined in 1984 by the german company KONTRON. It was defined of 100x160mm-europa-card and used 2x32 pins (row a and c). Later the third (middle) row of pins was defined for 16-bit-systems. Such bus uses all 3x32pins.
  • 96 pin DIN 41612 (3x32) female
    STEbus  STEbus (IEEE-1000)
  • 72 pin 2x36 EDGE female
    Unibus Available on the old Digital PDP-11

Sun Pinouts

  • 96 pin male or female (Fujitsu FCN 234P096-G/Y)
    SUN SBus SBus is a computer bus system that was used in most SPARC-based computers from Sun Microsystems during the 1990s

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