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A controller card is a computer hardware component that allows the motherboard to interface with and control other components. Most computers have necessary controllers installed, but some add-ons may require a separate controller card. Different types of hard drives may require a controller card, and network controller cards have become obsolete. Hobbyists may need controller cards when upgrading older computers.
A controller card is a type of computer hardware component that is installed on a computer motherboard. It allows the motherboard to interface with and control other components, such as disk drives, hard drives, printers, and input devices. Older computers often required a separate controller card to be installed with any new hardware or peripherals. Today, most computers have all the necessary controllers installed on the motherboard as part of the chipset, but some add-ons may still require a separate controller card to be installed.
Every piece of hardware in a computer requires a controller. Any computer will have all the controllers needed to operate all of its installed components. Many computers will include many standard controllers that will handle a number of standard devices, as manufacturers adhere to interface standards for these devices. This means that a new device installed on a computer will rarely require the addition of a controller card. Controller cards are designed to plug into a computer’s motherboard, usually into a type of interface called a Peripheral Components Interconnect (PCI) slot.
However, some devices, such as some hard drives, may require a controller card. There are different types of hard drives available in the market today. If a hard drive is added to a computer of a different type than the original drive, a controller card will be required for the new drive.
One type of controller card that has become obsolete due to advances in computer technology is the network controller card. On older computers, a separate card was required to control the device that allowed a computer to connect and operate on a local area network. Newer computers have this controller installed as part of the chipset.
Hobbyists and others looking to upgrade older computers will often need a controller card when adding a new device or upgrading devices such as optical drives or hard drives. Network controllers, Universal Serial Bus (USB) controllers, and hard drive controllers are some of the more common controller cards needed in these situations. Many manufacturers still make them for use in older computers, even though these components are gradually becoming obsolete.
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