Synology DiskStation User Manual page 40

Note:
 When more than 1 external USB disk is connected, usbshare2, usbshare3 ... will be created.
 DiskStation recognizes the following format: EXT3, EXT4, FAT, FAT32, and NTFS. Any unrecognized USB disk
will have to be formatted first before being used on the system.
To get the information of the disk:
You can access disk information by clicking
To eject or format an external disk:
Click Eject or Format.
Note:
 For more information about external disks, see its help by clicking the
top-right corner.
 You can also manage USB printer here. See "Set Synology DiskStation as Print Server" on Page 94 for more
information.
40 Chapter 4: Manage Storage Space
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Synology DiskStation User's Guide
Based on DSM 4.1
button (with a question mark) at the