What are the key hardware components required for a digital signage system, and how do they impact the performance and functionality of the system? What are the differences between commercial-grade and consumer-grade displays, and what factors should be considered when selecting a display? What are the benefits and limitations of different types of media players, such as standalone players and embedded players? How can hardware components be integrated with software and content management systems to optimize performance and user experience? Join the discussion and share your insights on digital signage hardware.