Synology DX517. Chassis type: Desktop. Device class: Small & Medium Business. Number of storage drives supported: 5, Supported storage drive types: HDD & SSD, Supported storage drive interfaces: Serial ATA, Serial ATA II, Serial ATA III, Storage drive sizes supported: 2.5,3.5". Width: 248 mm, Depth: 233 mm, Height: 157 mm, Weight: 3.91 kg. Product colour: BlackEffortless capacity expansion for Synology DiskStation solutions on-the-fly. 5-bay 3.5”/2.5” SATA expansion Easily add 5 additional drive bays to Synology DiskStation. Supporting both 2.5” and 3.5” SATA drives, DX517 is a flexible solution supporting on-the-fly volume expansion or serving as a local backup destination. Online volume expansion Managed from DiskStation Manager on the host NAS, the additional bays in the DX517 are immediately ready to be used once connected. On-the-fly volume expansion ensures that storage and services on the host are not interrupted during volume expansion. Hot-swappable drive tray design The hot-swappable drive trays of DX517 allow easy drive installation and replacement without powering down the system. Screwless drive tray design reduces the time needed for system setup. Dedicated local backup solution Synology DX517 can be used as a dedicated local backup solution for the Synology DiskStation. When created as a separate volume, the DX517 provides a great backup solution to its local hard disks in case of system failure.Warranty: 3 Years Storage Storage drives installed No Installed storage drive type No Supported storage drive types HDD & SSD Number of storage drives supported 5 Maximum supported storage capacity 80 TB Supported storage drive interfaces Serial ATA, Serial ATA II, Serial ATA III Storage drive sizes supported 2.5,3.5" Hot-swap drive bays Yes Ports & interfaces USB connectivity No eSATA ports quantity 1 Design Chassis type Desktop Product colour Black LED indicators Alarm, Power, Status Noise level 21.5 dB Number of fans 2 fan(s) Certification FCC B, CE B, BSMI B Performance Device class Small & Medium Business Compatible products Synology DS1817+, DS1517+ Power Power supply unit (PSU) capacity 200 W Number of power supply units 1 Power consumption (typical) 29.9 W AC input voltage 100-240 V AC input frequency 50 - 60 Hz Weight & dimensions Width 248 mm Depth 233 mm Height 157 mm Weight 3.91 kg Technical details Compliance certificates RoHS Harmonized System (HS) code 84717020 Packaging content Cables included AC, eSATA Operational conditions Operating temperature (T-T) 5 - 40 °C Operating relative humidity (H-H) 5 - 95% Storage temperature (T-T) -10 - 70 °C Storage relative humidity (H-H) 5 - 95%