DiskStation DS920+ Features: Average 15% performance boost to photo indexing and other computing-intensive operations, as well as database response time Built-in M.2 2280 NVMe SSD slots permit cache acceleration without occupying storage drive bays Flexibly scale up to seven drives to increase storage capacity as demand grows Build an on-premises, multi-user collaboration environment with fine-grained control Back up critical data and reduce your Recovery Time Objective (RTO) with Snapshot Replication Set up and run mainstream virtual machines within your Synology NAS Feature-rich Surveillance Station with user-friendly management tools Specifications: CPU Model: Intel Celeron J4125 Architecture: 64-bit Frequency: 4-core 2.0 (base) / 2.7 (burst) GHz Memory System Memory: 4 GB DDR4 non-ECC Total Memory Slots: 1 Maximum Memory Capacity: 8 GB (4 GB + 4 GB) Storage Drive Bays: 4 Maximum Drive Bays with Expansion Unit: 9 (DX517 x 1) M.2 Drive Slots: 2 (NVMe) Compatible Drive Type: 3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD M.2 2280 NVMe SSD Maximum Single Volume Size: 108 TB External Ports RJ-45 1GbE LAN Port: 2 USB 3.0 Port: 2 eSATA Port: 1 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 199 mm x 223 mm Weight: 2.24 kg Noise Level 19.8 dB(A) Power Supply Unit / Adapter 100 W Power Consumption 32.17 W (Access) 9.69 W (HDD Hibernation) System Fan 92 mm x 92 mm x 2 pcs Temperature Operating: 0°C to 40°C (32°F to 104°F) Storage: -20°C to 60°C (-5°F to 140°F)