Synology DiskStation DS420J NAS/storage server

Hardware
CPU: Realtek RTD1296 4-core 1.4 GHz
Memory: 1 GB DDR4
Compatible drive type: 4 x 3.5″ or 2.5″ SATA HDD/SSD (drives not included)
External port: 2 x USB 3.0 port
Size: (HxWxD) 184 x 168 x 230 mm
Weight: 2.21 kg
LAN: 1 x Gigabit (RJ-45)
Wake on LAN/WAN: Yes
Scheduled power on/off: Yes
System fa: n 2 (80 x 80 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