Synology DiskStation DS420+ 4 Bay Compact and High Performance NAS Solution

Technical Specifications

CPU: Intel Celeron J4025 2-core 2.0 GHz, burst up to 2.9 GHz
Hardware encryption engine:  Yes (AES-NI)
Memory:  2 GB DDR4 onboard (expandable up to 6 GB)3
Compatible drive type:  4 x 3.5" or 2.5" SATA HDD/SSD (drives not included) / ? 2 x M.2 2280 NVMe SSD (drives not included)
Hot swappable drive:  Yes
External port:  2 x USB 3.0 port
Size (HxWxD):  166 x 199 x 223 mm
Weight:  2.18 kg
LAN:  2 x Gigabit (RJ-45)
Wake on LAN/WAN:  Yes
Scheduled power on/off:  Yes
System fan:  2 (92 x 92 x 25 mm)
AC input power voltage:  100 V to 240 V AC
Power frequency:  50/60 Hz, single phase
Operating temperature:  0°C to 40°C (32°F to 104°F)
Storage temperature:  -20°C to 60°C (-5°F to 140°F)
Relative humidity:  5% to 95% RH
Maximum operating altitude:  5,000 m (16,400 ft)