The O2Micro OZ711M1MC1 MemoryCardBus Controller is a hardware component that facilitates the use of MemoryCardBus (MCB) devices, typically used for memory card readers or similar devices in computers. This controller supports the operation of devices like Secure Digital (SD) cards, MultiMediaCards (MMC), and other types of memory cards.

In terms of drivers, the O2Micro OZ711M1MC1 requires a specific driver to enable the operating system (like Windows) to communicate with the hardware and allow it to function correctly. Without the appropriate driver, the computer may not recognize the card reader, and the device may not work.