|Type||4-Bay 1U (no RAIL KIT)|
|Form Factor / Drive Height||430x290x44mm|
|CPU Mark (cpubenchmark.net)||?|
|Total Drives (alternate)||4|
|RAID Levels||Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10|
|SATA||SATA 7-pin Discrete with Power||Internal||4|
|USB3||USB3 type A (host)||External||2|
|Speed/RPM||6Gb/s SATA to Gigabit Ethernet (1,000 Mbit/s)|
Synology NAS Expansion DX513 5-Bay, For compatible DiskStation models (up to x16) ||
Synology VisualStation VS360HD Surveillance Station Live View Companion - (36-Channel 720p HD) ||
Synology NAS Expansion DX517 5-Bay, For compatible DiskStation models (x17 and newer) ||
Synology RackStation Expansion RX418 for 4-Bay 1U RackStation NAS (no RAIL KIT) - 15, 16, 18, 19 Series ||
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