It's usually a circuit board made to be easily added to your computer (via an expansion slot). They most commonly contain additional RAM memory, but there are many other choices (math chips, communication chips, graphic chips, etc.).
Just about anything. That's the idea of an expansion card (it expands the functionality of a computer with a add-in card).
Expansion Slot is just like port into which expansion card can be inserted. In otherwords port is female and card is male.
NO my dear
NIC (Network Interface Card)
To upgrade your RAM you will need to first buy a RAM expansion card. After you have the card you will then have to unscrew the cover of your computer and you will need to look for several rectangle shaped expansion slots that are on the motherboard itself. You then take the card and seat it securely into the expansion slot and the extra RAM that the card has added will take effect as soon as you start up the computer.
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as long as the other computer has the correct expansion slot
NO my dear
hard drive sound card motherboard RAM video card computer case monitor optical drive keyboard mouse power supply SATA expansion card audio/ visual input expansion card USB expansion card 10/ 100/1000 NIC
An adapter card is an internal card that enables your computer to communicate with another peripheral such as a monitor.
expansion card is required.
Computers include expansion slots that allow users to add new devices to their computers. A computer player, for example, may upgrade their video card to improve gaming performance. They can use an expansion slot to swap out the old video card with a new one without having to replace the motherboard. What are the advantages of having expansion slots? A computer's expansion slots can be used to install network cards. If the computer does not already have a Wi-Fi adaptor, a Wi-Fi network card can be installed. Furthermore, as newer, faster Wi-Fi standards are announced, expansion card Wi-Fi adapters can be swapped out for newer, faster cards.