DiskStation DS1522+ 20TB Features: Dependable Performance Up to 736/796 MB/s sequential read/write throughput makes file operations quick and efficient Versatile Network Storage Leverage built-in file and photo management, data protection, virtualization, and surveillance solutions Fast and Stable Connectivity Four 1GbE ports for simple integration into existing environments with optional 10GbE connectivity to tackle more specialized, bandwidth-heavy applications Easy Capacity Expansion Add up to 10 extra drive bays with 2 DX517 expansion units for a maximum of 15 storage drives Extendable Product Support Backed by Synology's 3-year limited hardware warranty, extendable to 5 years in select markets Specifications: CPU CPU Model AMD Ryzen R1600 CPU Quantity 1 CPU Architecture 64-bit CPU Frequency 2-core 2.6 (base) / 3.1 (turbo) GHz Hardware Encryption Engine (AES-NI) Yes Memory System Memory 8 GB DDR4 ECC SODIMM Memory Module Pre-installed 8 GB (8 GB x 1) Total Memory Slots 2 Maximum Memory Capacity 32 GB (16 GB x 2) Storage Drive Bays 5 Maximum Drive Bays with Expansion Unit 15 (DX517 x 2) M.2 Drive Slots 2 (NVMe) Compatible 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 4 (with Link Aggregation / Failover support) USB 3.2 Gen 1 Port 2 eSATA Port 2 PCIe PCIe Expansion 1 x Gen3 x2 network upgrade slot File System Internal Drives Btrfs, EXT4 External Drives Btrfs, EXT4, EXT3, FAT, NTFS, HFS+, exFAT Appearance Size (Height x Width x Depth) 166 mm x 230 mm x 223 mm Weight 2.7 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 Yes Power Recovery Yes Noise Level 22.90 dB(A) Scheduled Power On / Off Yes Wake on LAN / WAN Yes Power Supply Unit / Adapter 120 W AC Input Power Voltage 100V to 240V AC Power Frequency 50/60 Hz, Single Phase Power Consumption 52.06 W (Access), 16.71 W (HDD Hibernation) British Thermal Unit 177.64 BTU/hr (Access), 57.02 BTU/hr (HDD Hibernation) 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) Relative Humidity 5% to 95% RH Certification FCC CE BSMI VCCI RCM UKCA EAC CCC KC Warranty 3 Years Environment RoHS Compliant Packaging Content Main Unit X 1 Accessory Pack X 1 AC Power Adapter X 1 AC Power Cord X 1 RJ-45 LAN Cable X 2 Quick Installation Guide X 1