If you have already programmed 24 tracks, 
The first track of the first directory plays automatically.
) button to stop playing.
) button again,you can remove the USB device safely.
Do not connect a USB charging device to the USB connection port on the player, because it may cause damage to the product.
Some external USB storage device may not be compatible with this player.
With external HDD, FAT format can be played.
With USB 2.0 HDD, connect to a separate power source.
If memory of an external USB storage device is segmented into several parts, MP3 files of only the first hard disk drive can be played.
DRM applied files are not played.
Even if the file name ends with .mp3, the file does not play if actual file format is MPEG layer 1 or 2.
Do not use a USB hub as it will not be recognized.
Up to 15 letters of MP3/WMA file name will be shown.
Removable HDDs equipped with less than 160 Gbytes are supported. Removable HDDs equipped with 160Gbytes or more may not be recognized, depending on the device.
When selecting USB function,file reading 
When playing a USB device,there may be a delay then advancing to the next track,especially with HDD.
If the external USB storage device supports only USB VER1.1 and the access speed is slow,the file may not property.
Connect the external USB storage device to your player. 
Select the USB function by using the FUNCTION button.
, 
button.
Whenever you press the button, you can search backward or forward quickly.
When you use the high speed search function, there is no sound.
MM-D330/XE, MM-D320/SQ, MM-D320/EN, MM-D330/EN, MM-D320/RU specifications
The Samsung MM-E320/EN, MM-D320/EN, and MM-E330/EN are part of the company’s notable lineup of mini audio systems that exemplify the blend of powerful sound performance and compact design. These models are particularly designed for music enthusiasts looking for functionality, style, and advanced audio technologies in a compact setup.One of the standout features of these mini systems is their ability to deliver exceptional sound quality. Equipped with powerful speakers, they ensure rich bass and clear highs, making them ideal for everything from casual listening to lively parties. With a total output of typically around 300 watts, these systems are designed to fill larger spaces with immersive sound, enhancing the listening experience.
These audio systems also incorporate various connectivity options that enhance versatility. Bluetooth technology allows users to stream music directly from smartphones, tablets, or computers without the need for cumbersome wires. In addition, USB ports enable quick access to digital music libraries, while CD players ensure compatibility with physical media.
An appealing feature of the Samsung MM-E320/EN, MM-D320/EN, and MM-E330/EN is their built-in FM tuners, offering users the ability to tune into favorite radio stations. The audio systems are further complemented by intuitive control interfaces, including remote control options, enabling effortless navigation through playlists and settings.
Further enhancing the user experience, these models include preset equalizer modes. This feature allows listeners to customize audio output according to their preferences, whether they prefer enhanced bass for a dance track or crystal-clear treble for classical music.
Despite their robust features, these mini audio systems boast a sleek design that allows them to fit seamlessly into any setting, from living rooms to bedrooms. Compact and stylish, they are designed to complement modern decor while providing powerful audio performance.
In summary, the Samsung MM-E320/EN, MM-D320/EN, and MM-E330/EN combine advanced audio features, effective connectivity options, and an elegant design, making them perfect choices for those seeking a high-quality audio experience in a compact form. With their versatile functionalities, these models continue to hold appeal for a wide array of users, from casual listeners to serious audiophiles.