QNAP TS-673-4G 6-Bay NAS AMD RX-421ND Quad-Core ~3.4GHz 4GB DDR4 512MB DOM 2xM.2 2xPCIe 4xUSB3.0 4K 4xGigabit LAN Hot-swappable Tower Delivering enterprise performance at SMB prices, the TS-h686 features an Intel® Xeon® D processor and DDR4 ECC (Error Correcting Code) memory (expandable to 128 GB) with dependable reliability. With the ZFS-based QuTS hero operating system, the TS-h686 ensures data integrity and supports block-level inline data deduplication and compression, near-limitless snapshots, and real-time SnapSync. The TS-h686 helps your business achieve reliable service-level agreement performance in various use cases, including mission-critical file servers, virtualization servers, collaborative video editing, or efficient data backup and recovery applications. CPU Intel® Xeon® D-1602 dual-core 2.5 GHz processor (burst up to 3.2 GHz) CPU Architecture 64-bit x86 Floating Point Unit Encryption Engine Hardware-accelerated Transcoding System Memory 8 GB UDIMM DDR4 ECC (2 x 4 GB) Maximum Memory 128 GB (4 x 32 GB) Memory Slot 4 x Long-DIMM DDR4 Flash Memory 5GB (Dual boot OS protection) Drive Bay 4 x 3.5-inch SATA 6Gb/s, 3Gb/s + 2 x 2.5-inch SATA 6Gb/s, 3Gb/s Hot-swappable SSD Cache Acceleration Support 2.5 Gigabit Ethernet Port (2.5G/1G/100M) 4 PCIe Slot 2 Slot 1: PCIe Gen3 x8 Slot 2: PCIe Gen3 x8 USB 3.2 Gen 1 port 3 Form Factor Tower LED Indicators System status, 2.5' SSD, M.2 SSD, 3.5' HDD Dimensions (HxWxD) 231.9 × 224.9 × 319.8 mm Weight (Net) 7.27 kg Operating temperature 0 - 35°C (32°F - 95°F) Power Supply Unit Input: 100-240V~, 3-1.5A, 60-50Hz; Output 250W Fan System fan: 1 x 80mm CPU fan: 1 x 97mm 2 ysr warranty