QNAP TS-351-4G 3 Bay NAS Intel® Celeron® J1800 dual-core 2.41 GHz processor 4 GB SODIMM DDR3L Hot-swappable 1xUSB 3.2 1xGbE 2 yrs warranty The TS-351 is designed for home and small offices, allowing you to effortlessly manage files and enjoy multimedia entertainment while also providing reliable data protection. It uses an Intel® Celeron® J1800 dual-core 2.41 GHz processor (burst up to 2.58 GHz) and 2GB/4GB DDR3L memory (upgradable to 8GB), provides 3.5-inch SATA 3Gb/s and 6Gb/s drive bays, and supports AES 256-bit encryption for both full NAS volumes and shared folders, ensuring system performance while protecting the confidentiality of sensitive business data stored in the NAS. CPU Intel® Celeron® J1800 dual-core 2.41 GHz processor (burst up to 2.58 GHz) CPU Architecture 64-bit x86 Graphic Processors Intel® HD Graphics Floating Point Unit Hardware-accelerated Transcoding , up to 1080P System Memory 4 GB SODIMM DDR3L (1 x 4 GB) Memory Slot 2 x SO-DIMM DDR3L Flash Memory 512MB (Dual boot OS protection) Drive Bay 3 x 3.5-inch SATA 6Gb/s, 3Gb/s Hot-swappable M.2 SSD Slot 2 x M.2 2280 NVMe 500 MB/s slots SSD Cache Acceleration Support Drive bay 3 M.2 Slots 1 to 2 Gigabit Ethernet Port (RJ45) 1 USB 2.0 port 2 HDMI Output 1, HDMI 1.4a (up to 1080p) Audio Output 1 x built-in speaker, 1 x 3.5mm line out jack (for amplifiers or speakers) LED Indicators System Status, LAN, USB, HDD1~3, M.2 SSD1~2 Dimensions (HxWxD) 142 × 150 × 260.1 mm Weight (Net) 1.64 kg Operating temperature 0 - 40 °C (32°F - 104°F) Power Supply Unit 65W adapter, 100 - 240V Fan 1 x 90mm, 12VDC