Usually, the manual or specifications sheet for the motherboard contains this information. You can focus on fewer options once you are aware of the slots that are available, such as PCIe x16 for graphics cards and PCindia stream apkIe x1 for network cards. When selecting an expansion card, take into account your unique requirements and use cases as well. For instance, it would be wise to spend money on a high-performance graphics card that makes use of a PCIe x16 slot if your main focus is gaming or graphic-intensive tasks. On the other hand, a USB expansion card or PCIe x1 sound card might work well if you require more USB ports or better audio quality.