About the item: 1U rack-mount NAS with (4) 2.5/3.5' HDD bays and (2) M.2 NVMe SSD cache slots. Delivering faster access, lower latency, and high-availability 10 Gbps networking for large-scale file storage and sharing. Dimensions: 442.4 x 400 x 43.7 mm (17.4 x 15.7 x 1.7') Storage Capacity: (4) 3.5' drive bays; (2) M.2 NVMe bays Networking Interface: (2) 10G SFP+ (10G only); (1) GbE RJ45 (1G/100M/10M) Power Redundancy Form Factor: Rack mount (1U) Hard Drive Capacity: (4) 2.5/3.5' HDD / SSD support; (2) M.2 NVMe SSD support Max. Power Budget for Drives: 125W Max. Power Consumption: 150W Power Method: (1) Universal AC input, 100240V AC, 3A Max., 50/60 Hz; (1) USP-RPS DC input, 11.5V DC, 13.91A Power Supply: AC/DC, internal, 150W Processor: Quad-Core ARM Cortex-A57 at 2.0 GHz Memory: 8 GB Management: Ethernet RF Interface: Bluetooth 4.1 Weight: 6.7 kg (14.8 lb) Enclosure Material: SGCC steel Mount Material: SGCC steel LEDs: Ethernet ; SFP+ ; HDD ; RPS ; System Supported File Protocols: NF