DiskStation DS425+ Features: Capable Performance Up to 278/281 MB/s sequential read/write throughput supports stable data transfers Fast Networking Built-in 2.5GbE port for fast connectivity out of the box Versatile Network Storage Leverage built-in file and photo management, data protection, and surveillance solutions Centralized Data Storage Store up to 80 TB of data in one place, maintain 100% data ownership, and enjoy multi-platform access Extendable Product Support Backed by Synology's 3-year limited hardware warranty, extendable to 5 years in select markets Specifications: CPU CPU Model Intel Celeron J4125 CPU Quantity 1 CPU Core 4 CPU Architecture 64-bit CPU Frequency 2.0 (base) / 2.7 (turbo) GHz Hardware Encryption Engine Yes Memory System Memory 2 GB DDR4 non-ECC Total Memory Slots 1 Maximum Memory Capacity 6 GB (2 GB + 4 GB) Storage Drive Bays 4 M.2 Drive Slots 2 (NVMe) Drive Type 3.5" SATA HDD 2.5" SATA SSD M.2 2280 NVMe SSD Hot Swappable Drive Yes External Ports RJ-45 1GbE LAN Port 1 RJ-45 2.5GbE LAN Port 1 USB 3.2 Gen 1 Port 2 Appearance Size (Height x Width x Depth) 166 mm x 199 mm x 223 mm Weight 2.18 kg Others System Fan 92 mm x 92 mm x 25 mm x 2 pcs AC Input Power Voltage 100V to 240V AC Power Frequency 50/60 Hz, Single Phase Temperature Operating Temperature 0°C to 40°C (32°F to 104°F) Storage Temperature -20°C to 60°C (-5°F to 140°F) Operating Humidity 8% to 80% RH Storage Humidity 5% to 95% RH Maximum Operating Altitude 5,000 m Certification FCC CE BSMI VCCI RCM UKCA EAC CCC KC BIS Warranty 3-year hardware warranty