Supporting up to twelve 3.5" HDDs & four 2.5" SSDs, the TS-1685 is a high-capacity, robust, & reliable business NAS powered by an Intel Xeon D processor. Designed to optimize enterprise IT infrastructure, the TS-1685 comes with three PCIe slots that support 10 Gb E/40 Gb E NIC, PCIe NVMe SSD, graphics cards, & USB (Universal Serial Bus) 3.1 expansion cards. Incorporating security & scalability, the TS-1685 presents an ideal choice for a complete business-ready storage solution with cross-platform file sharing, comprehensive backup & disaster recovery, i SCSI & virtualisation, & more business applications. Features NAS & i SCSI-SAN unified storage solution Built-in M.2 SATA 6 Gb/s slots & 2.5” SSD slots Qtier technology & SSD caching enable 24/7 optimized storage efficiency 10 Gb E/40 Gb E-ready, highly-efficient storage solution for virtualization & intensive data transmission Supports virtualization, containerized apps, centralized storage, backup, sharing, & disaster recovery Q’center for centrally managing all of your NAS devices, & QRM+ as a centralized management solution for networked computing devices Qfiling enabling automated file organization, Qsirch full-text search engine, & Qmail Agent for centralized email management Scalable up to 56 drive capacity with QNAP expansion enclosures Processor Intel Xeon Processor D-1521, 4-core 2.4 GHz Memory 16GB non-ECC RAM (8GB UDIMM x 2) Total DIMM slots: 4 Maximum memory: DDR4 128GB (with DDR4 32GB RDIMM x 4) 512 MB DOM Hard Drive Tray 12 x 2.5"/3.5" HDD/SSD slot 4 x 2.5" SSD slot Audio 1 x built-in speaker, 1 x 3.5mm Line-out jack Power Supply Sleep mode: 61.36 W In Operation: 127 W 100-240V~, 3-1.5A, 60-50 Hz, 250W PSU Dimensons 303.84 x 369.89 x 319.8 mm Net weight (NAS only): 13.39kg Interfaces 2 x 10GBASE-T ports 4 x Gigabit ports Front: 1 x USB (Universal Serial Bus) 3.0 port Rear: 2 x USB (Universal Serial Bus) 3.0 port Expansion Slot 1: PCIe Gen.3 x 8 Slot 2: PCIe Gen.2 x 4 Slot 3: PCIe Gen.3 x 8