The Realtek Card Reader (0116) driver is a software package that enables your computer to interact with the Realtek card reader hardware. A card reader is a device used to read memory cards such as SD cards, microSD cards, and others that are used in digital cameras, smartphones, and other devices. The Realtek 0116 refers to a specific model of a Realtek card reader.

This driver ensures that your computer can properly read and write data to the memory cards connected through the card reader. Without the correct driver, your computer might fail to recognize the card reader, or the devices you insert into it might not function correctly.