What is typically inserted in an AMR slot to enable sound functions?

An AMR (Audio Modem Riser) slot is a specialized type of expansion slot found on some motherboards, primarily designed for audio processing functions. The correct answer is a daughterboard, which is specifically designed to extend a motherboard's capabilities by providing additional functionalities, such as sound processing.

Daughterboards are typically smaller circuit boards that connect to a motherboard via a dedicated slot like the AMR. They can integrate specific audio processing technologies that improve overall sound output and capabilities, making them ideal for delivering enhanced sound functions.

While other options like sound cards and expansion cards can certainly provide sound functions, they connect to different types of slots, such as PCI or PCIe, rather than the AMR slot. A digital signal processor can be part of more complex sound cards or systems but doesn’t directly relate to being inserted into an AMR slot as a standalone unit.