Synology 5-Bay Plug-n-Use Expansion Unit to DS1010+, DS710+, and DS1511+, & DS712+ Network Attached Storage DX510 (Black) Managed from Synology DiskStation Manager 2.3 Plug-n-use expansion Unit for DS1010+, DS710+ Expand the DiskStation's capacity with 5 additional bays of storage Expand without migration of data &#8211; this maintains the availability of data during capacity expansion. Hot-swappable HDD design