Which chipset provides support to the slower onboard peripherals?

The Southbridge chipset is designed to handle communication between the CPU and various slower onboard peripherals, including USB ports, audio, and non-bus-mastering functions such as keyboard and mouse connections. It manages input/output operations and connects to the Northbridge, which is responsible for faster components like the CPU and memory.

In contrast, the Northbridge focuses on high-speed interactions and acts as a bridge to the CPU and system RAM. The Memory Controller specifically manages memory access but does not deal with peripheral I/O functions. The IO Controller is a term that could refer to specific devices that manage I/O functions, but in the context of chipsets, it is less commonly used compared to the established Northbridge and Southbridge terminology. Hence, the Southbridge is the appropriate component that supports slower onboard peripherals.