expansion card

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expansion card

(hardware)
A circuit board which can be plugged into one of a computer's expansion slots to provide some optional extra facility such as additional RAM, disk controller, coprocessor, graphics accelerator, communication device or some special-purpose interface.

Different computers have different standards for the cards they accept, e.g. PCI.

expansion card

A printed circuit board that plugs into a slot on the motherboard and enables a computer to control a peripheral device. Also called an "interface card," "adapter" or "controller," all the printed circuit boards that plug into a computer's bus are technically expansion cards, because they "expand" the computer's capability.

They Used to Be the Norm
In earlier PCs, controllers for drives, input/output ports, display, network and sound all resided on separate plug-in cards. Subsequently, peripheral control was built into the chipset (see PC chipset); however, users still have options to install their own controllers. For example, in order to enhance video game performance, a faster graphics card can be plugged into an empty PCI or PCI Express slot, and the internal display circuit on the motherboard can be disabled. See motherboard and expansion port. See also bus extender.


References in periodicals archive ?
The second kit, the Apollo EVK evaluation kit adds further functionality and comprises the EVB board system plus add-on modules that include a Bluetooth Low Energy (BLE) add-on card, and a Sensor Expansion Card.
When installed, a Supermicro UIO card becomes part of the serverboard, and the system still retains all of its PCI-Express and PCI-X slots for expansion cards," asserts Charles Liang, CEO and president of Supermicro.
Both boards leverage DDR2 667/533MHz memory and support top-of-the-line PCI-Express x16 expansion cards, while the onboard PCI-Express gigabit LAN offers maximum I/O throughput and networking connectivity.
Additionally, the software enables the encoding of any data types found on either a handheld computer itself or on any expansion cards.
The PCMCIA cards for notebooks about the size of credit cards) had not arrived on the scene yet, but they would eventually eliminate the market for luggable computers with room for full-sized ISA expansion cards.
Comtrol's RocketPort technology enables these cards to outperform other serial expansion cards by handling the transmission of large amounts of data more reliably and efficiently.
The contract is for the supply of computer expansion cards for multimedia laboratory 4 units.
This 4U-high system offers 15 slots -- of which 10 are full-length 64-bit PCI slots -- to accommodate OEM needs for mixing and matching I/O expansion cards to meet their configuration requirements.
The expansion cards, which range from 8MB to 256MB, can be easily carried and inserted in the expansion slot for instant access to applications, content, data storage and backup, images, video clips and more.
So, how come there are only three expansion cards developed to date?
The company's flagship brands -- DeviceMaster(R) and RocketPort products -- include in-server serial expansion cards, network serial port servers, network appliances, and application software.
Products within the series are available as integrated solutions for IBM[R] BladeCenter[R] and eServer[TM] systems, as well as expansion cards suitable for most cluster systems.