Synology RS2821RP+ RackStation 16-Bay Scalable NAS ( RAIL KIT optional ) Check HDD compatibility listing.

•CPU : AMD Ryzen quad core 2.2GHz
•Floating Point
•Memory: DDR4 4GB ECC UDIMM (Expandable, up to 32GB
•Internal HDD/SSD: 3.5" or 2.5" SATA,SSD , HDD x16 (Hard drive not included)
Check HDD compatability listing.
•Hot Swappable HDD
•External HDD Interface: USB 3.0 X 2, Expansion Port x1
•Size (HxWxD): 132.3x482x656.5mm
•Weight: 17.1Kg
•LAN: Gigabit x4
•Link Aggregation
•Wake on LAN/WAN
•System Fan: 80x80mm x4
•Easy Replacement System Fan
•Wireless Support (dongle)
•Noise Level: 39.3 dB(A)
•Power Recovery
•AC Input Power Voltage: 100V-240V AC
•Power Frequency: 50/60 Hz, Single Phase
•Power Consumption: 88W (Access); 36W (HDD Hibernation)
•Redundant Power Supply
•Operating Temperature: 5°C-35°C
•Storage Temperature: -10°C-70°C
•Relative Humidity: 5%-95% RH
•Maximum Operating Altitude: 6,500 feet