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Expansion card
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In computing, an expansion card, also known as an expansion board, adapter card, peripheral card or accessory card, is a printed circuit board that can be inserted into an electrical connector, or exp
Example of a PCI digital I/O expansion card using a large square chip from PLX Technology to handle the PCI bus interface
Example of a PCI digital I/O expansion card using a large square chip from PLX Technology to handle the PCI bus interface
Altair 8800b from March 1976 with an 18-slot S-100 backplane which housed both the Intel 8080 mainboard and many expansion boards
Altair 8800b from March 1976 with an 18-slot S-100 backplane which housed both the Intel 8080 mainboard and many expansion boards
Rack of IBM Standard Modular System expansion cards in an IBM 1401 computer using a 16-pin gold plated edge connector first introduced in 1959
Rack of IBM Standard Modular System expansion cards in an IBM 1401 computer using a 16-pin gold plated edge connector first introduced in 1959
Configuration DIP switches in a 16-pin through-hole package as often found in ISA expansion cards from the 1980s
Configuration DIP switches in a 16-pin through-hole package as often found in ISA expansion cards from the 1980s
Plug and play
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In computing, a plug and play device or computer bus is one with a specification that facilitates the recognition of a hardware component in a system without the need for physical device configuration
A third-party serial interface card for the Apple II. The user cut the wire traces between the thinly connected ⧓ triangles at X1 and X3 and soldered
A third-party serial interface card for the Apple II. The user cut the wire traces between the thinly connected ⧓ triangles at X1 and X3 and soldered across the unconnected ◀▶ pads at X2 and X4 at the center of the card. Reverting the modification was more difficult.
A NuBus expansion card without jumpers or DIP switches
A NuBus expansion card without jumpers or DIP switches
An MCA expansion card without jumpers or DIP switches
An MCA expansion card without jumpers or DIP switches
An example of an ISA interface card with extremely limited interrupt selection options, a common problem on PC ISA interfaces. Kouwell KW-524J dual se
An example of an ISA interface card with extremely limited interrupt selection options, a common problem on PC ISA interfaces. Kouwell KW-524J dual serial, dual parallel port, 8-bit ISA, manufactured in 1992: * Serial 1: IRQ 3/4/9 * Serial 2: IRQ 3/4/9 * Parallel 1: IRQ 5/7 * Parallel 2: IRQ 5/7 (There is no technical reason why 3,4,5,7,9 cannot all be selectable choices for each port.)