Add-on computer cards, such as capture cards, sound cards and others, extend the features and performance of your computer. Capture cards allow video to be recorded from external sources, such as game consoles and cameras, and are popular with streamers and video producers. Audio cards, on the other hand, improve sound quality and offer more versatile interfaces for audio playback and recording, making them ideal for music lovers and professional sound engineers. Other add-on cards include network and USB expansion cards, which increase the connectivity of your computer. These cards are particularly suitable for users who want to upgrade or extend the functionality of their computer to meet more specific needs.