MP3 module with TF card and hard drive playback — straightforward, reliable audio control Key benefits Flexible source support: play MP3 files from a TF (microSD) card up to 16 GB or from a hard drive up to 32 GB, so you can store and access large playlists without frequent swapping. Automatic mode switching: if no TF card is detected when powering on, the module automatically switches to the hard drive. This removes manual setup and keeps playback seamless. Simple, reliable controls: a clear button layout lets you change tracks, adjust volume, and pause/play quickly — ideal for users who need intuitive operation. Immediate status feedback: a red LED provides real-time playback status so you can monitor operation at a glance. What it does and why it matters Function: stable MP3 playback from two storage types, with on-device control for essential operations. Compatibility: accepts TF cards (up to 16 GB) and hard drives (up to 32 GB), covering common media storage options. Performance: consistent playback behavior with automatic source selection reduces interruptions and simplifies use. Visibility: LED status indicator helps you confirm playback state without interrupting the device or checking connected equipment. Practical applications Embedded audio projects: integrate into kiosks, information displays, or DIY electronics where reliable MP3 playback and simple controls are required. Retrofits and custom installations: add easy-to-use audio playback to cabinets, furniture, or older systems that need a compact, dual-source player. Educational or demonstration units: use in classrooms, training setups, or product demos where quick file changes and visible status are important. What you get MP3 playback module supporting TF cards (up to 16 GB) and hard drives (up to 32 GB) Automatic switch to hard drive when no TF card is present at power-on Intuitive buttons for track, volume, and pause/play control Red LED showing real-time playback status Designed for straightforward integration and dependable everyday use without complex configuration.