4-Bay
CPU Model: Intel Celeron J3455
CPU Frequency: Quad Core 1.5 (burst up to 2.3 GHz)
RAM: 4GB DDR3L (up to 8GB)
2 x USB 3.0, 1 x eSATA, 2 x Gigabit LAN
Support Link Aggregation / Failover
Supports SHR, RAID 0,1,5,6,10
2160p 4K Ultra HD video transcoding
Supports Synology High Availability
Built-in 2 x IP Cam Free Licenses (up to 40)
Max. Expandable to (with Expansion): 9 Bay
3 Years Warranty
Official website: https://www.synology.com/en-global/products/DS918+