Which of the following best describes the purpose of expansion slots in modern computers? Expansion slots allow additional cards to be connected to the motherboard that interface with peripheral devices. Power connectors are responsible for which of the following? Taking current from external wall outlets. Your computer’s motherboard has a few connector types. It has one CPU socket for the CPU, a few DDR4 slots for your RAM, a few SATA connectors for your HDDs and SSDs, and an array of PCI slots for everything else. Role of Adapter Card, it’s a Types and Expansion Slot. Adapter card also known by the name of an accessory card or expansion card is a type of circuit board that allows the users to expand their systems. It is inserted into motherboard or riser card to enhance the functionality of the desktop or server system unit. I briefly discuss and illustrate the motherboard expansion slots, cards, pci slots, pcie slots x1, and x16. Role of Adapter Card, it’s a Types and Expansion Slot Adapter card also known by the name of an accessory card or expansion card is a type of circuit board that allows the users to expand their systems. It is inserted into motherboard or riser card to enhance the functionality of the desktop or server system unit.

Function Of A Expansion Slots Machines
Function Of A Expansion Slots Machine

Alternatively referred to as a bus slot or expansion port, an expansion slot is connection or port located inside a computer on the motherboard or riser board that allows a computer hardware expansion card to be connected. For example, if you wanted to install a new video card in the computer, you’d purchase a video expansion card and install that card into the compatible expansion slot.

Many of the below expansion card slots are obsolete.You’re most likely only going to encounter AGP, PCI, and PCI Express when working with computers today. In the picture below is an example of what expansion slots may look like on a motherboard. In this picture, there are three different types of expansion slots: PCI Express, PCI, and AGP.

PCI – Network card, SCSI, Sound card, Video card
PCI Express – Video card
AGP – Video card
ISA – Network card, Sound card, Video card
AMR – Modem, Sound card
CNR – Modem, Network card, Sound card
EISA – SCSI, Network card, Video card
VESA – Video card

PCI Express: The best type of expansion slot to have in your PC is the PCI Express, also written as PCIe. Without boring you, the PCI Express type of expansion slot communicates with the motherboard, and therefore with the microprocessor, both quickly and efficiently.

PCI:The PCI slot is the most common form of internal expansion for a PC.

[bs_icon name=”glyphicon glyphicon-exclamation-sign”] Some PCs have a mixture of PCI and PCI Express slots. If so, go with PCI Express when you have that option.

AGP: This type of expansion slot was specifically designed to deal with graphics adapters. In fact, AGP stands for Accelerated Graphics Port. Older PCs may sport this expansion slot, but the best video cards use PCI Express.

ISA:The most ancient type of expansion slot is the ISA, which stands for (get this) Industry Standard Architecture. That’s because it never really had a name until another, better type of expansion slot came along. ISA slots hang around to be compatible with older expansion cards.

PCI slot

Function Of A Expansion Slots Machines

PCI card

PCI-e slot (x16)

PCI-e card (x16)

AGP slot

AGP card

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An expansion card is an electronic circuit board that adds more functionality to a desktop computer. These cards are installed into the expansion slot of a computer motherboard, and they allow the computer to perform additional functions not offered by the motherboard. Video cards and sound cards are common examples: a new video card added will enhance the three dimensional graphics processing power of a computer while a new sound card may improve a computer’s audio input.

There are alternative terms used for this type of card, and it is also known as expansion board, add-on card, interface adapter or an internal card. Generally, between one and seven expansion cards can be installed into the desktop computer system. Laptops do not use standard cards due to their small form factor, although they can often accept a removable PCMCIA card that offers additional functions.

The Altair 8800, developed in the mid 1970s, was the first microcomputer to add an expansion card bus. In 1981, IBM® launched its first PC with an XT bus, which was later replaced with a 16-bit ISA. The introduction of the PCI bus in 1991 resulted in modern forms of interface adapters that provided additional benefits beyond enhanced graphics and sound.

Most cards are inserted in PCI or “Peripheral Component Interconnect” slots, which are integrated circuits fitted onto the motherboard. One edge of the card holding the contacts or keys is inserted into the slot. This establishes an electrical contact between the motherboard and the card’s integrated circuits.

Standard interface adapters, such as graphics cards and sound cards, offer various added functions. Some video cards offer video capture, MPEG 2 and MPEG 4 decoding, a light pen, and the ability to connect to multiple monitors, for example. Sound cards may add functions for composing music, editing audio presentations, and other multimedia applications.

Function Of A Expansion Slots Machine

There are some “low-profile” cards that fit in a lower height computer framework. Some are used solely for external connectivity such as modem cards, storage area network (SAN), and network cards, which are commonly referred to as I/O cards or input/output cards. A USB card is mainly used by users who need additional USB or Firewire ports.

A PC expansion card can only be inserted on computers with available expansion slots. Computers such as the Apple Macintosh® and other all-in-one systems do not accept these cards.