Hardware Specifications CPU CPU Model Realtek RTD1296 CPU Architecture 64-bit CPU Frequency Quad Core 1.4 GHz Hardware Encryption Engine  Hardware Transcoding Engine 10-bit H.265 (HEVC), MPEG-4 Part 2, MPEG-2, VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30 Memory System Memory 2 GB DDR4 Storage Drive Bays 4 Compatible Drive Type* (See all supported drives) •3.5" SATA HDD •2.5" SATA HDD •2.5" SATA SSD Maximum Internal Raw Capacity 40 TB (10 TB drive x 4) (Capacity may vary by RAID types) Maximum Single Volume Size 108 TB Hot Swappable Drive  Notes •"Compatible drive type" indicates the drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay. •The maximum single volume size is not directly related to the maximum raw capacity. (Learn more) External Ports RJ-45 1GbE LAN Port 2 (with Link Aggregation / Failover support) USB 3.0 Port 2 File System Internal Drives EXT4 External Drives •EXT4 •EXT3 •FAT •NTFS •HFS+ •exFAT* Notes exFAT Access is purchased separately in Package Center. Appearance Size (Height x Width x Depth) 166 mm x 199 mm x 223 mm Weight 2.28 kg Others System Fan 92 mm x 92 mm x 2 pcs Fan Speed Mode •Full-Speed Mode •Cool Mode •Quiet Mode Brightness adjustable front LED indicators  Power Recovery  Noise Level* 20.9 dB(A) Scheduled Power On/Off  Wake on LAN/WAN  Power Supply Unit / Adapter 90W AC Input Power Voltage 100V to 240V AC Power Frequency 50/60 Hz, Single Phase Power Consumption* 26.49 W (Access) 8.78 W (HDD Hibernation) British Thermal Unit 90.39 BTU/hr (Access) 29.96 BTU/hr (HDD Hibernation) Environment Temperature Operating Temperature 5°C to 40°C (40°F to 104°F) Storage Temperature -20°C to 60°C (-5°F to 140°F) Relative Humidity 5% to 95% RH Certification •FCC Class B •CE Class B •BSMI Class B Warranty 2 Years Notes Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).