DiskStation DS420+ DS420+ 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 Access, share, and sync your data easily across different operating systems and devices Back up critical data and reduce your Recovery Time Objective (RTO) with Snapshot Replication Organize and stream music, video, and photo collections across all your devices Freely access files on the go and back up mobile photos with iOS and Android™ apps Specifications: CPU Model: Intel Celeron J4025 Architecture: 64-bit Frequency: 2-core 2.0 (base) / 2.9 (burst) GHz 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) 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 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: 2.18 kg Noise Level 19.8 dB(A) Power Supply Unit / Adapter 90 W Power Consumption 28.30 W (Access) 8.45 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) IronWolf 2TB ST2000VN004 Features: 1- to 8-bay network attached storage (NAS) Desktop RAID and servers Multimedia server storage Private cloud Specifications: Capacity: 2 TB Interface: SATA 6Gb/s Form Factor: 3.5 in Cache Size: 64 MB Disk Speed (RPM): 5900rpm