Power and model - Power supply: 5V to 48V DC - Function: Two-channel high-definition audio output circuit with volume boost - Model: Retro Little Milk Bottle Compatibility and usage - Compatible with desktop computers - Notebook (laptop) usage supported with either integrated sound card or discrete (independent) sound card - Keeps to the original function of providing a two-channel HD audio output with added volume Key benefits - Improves stereo audio with a dedicated two-channel output - Provides a selectable volume boost for clearer, louder playback - Wide power input range enables use across different systems and power supplies - Simple integration for upgrading existing audio setups without replacing main sound components Size and material notes - Size and materials are not specified in the current description; no additional details provided Practical use scenarios - Desktop PC upgrade: Enhance movies, music, and games with clearer two-channel stereo audio and adjustable volume without changing the main sound card - Notebook multimedia desk setup: Use with a laptop to achieve higher playback volume and improved stereo output for videos and music - DIY compact audio systems: Integrate into small multimedia projects or custom speaker setups that require a two-channel HD output and a separate volume boost Performance and reliability - Delivers two-channel HD audio output with volume enhancement suitable for general desktop and laptop audio needs - Designed to operate across a broad DC power range for flexible integration with various equipment Notes - The description aligns with the model Retro Little Milk Bottle and specifies 5V-48V power input, two-channel HD output, and volume boost - No additional usage restrictions beyond the stated compatibility with desktop computers and notebooks with integrated or independent sound cards