DSM can manage external devices connected to a Synology storage system, such as external drives, printers, and USB storage devices.

DSM can also configure a storage system as a print server so client computers or mobile devices connected to the storage system can access printers.

DSM supports file systems and access controls for external storage devices.

• Configure access permissions for all connected external storage devices, such as assigning permissions to specific users or groups.
• Restrict USB port usage to block all types of external USB storage devices from connecting to the storage system.
• Perform a S.M.A.R.T. test on external storage devices to determine the drive status and condition.

The following printing protocols are supported:

• LPR
• IPP
• Socket
• BJNP

Printing Limitations

• Synology HD, FS, SA, XS+, and XS series models released from 2022 onward no longer support network printers or USB printers.
• Synology Plus, Value, and J series models from the 23-series and later no longer support connecting to printers via USB.
• RC18015xs+ does not support USB printers.