QNAP TS-251+-2G 2 Bay NAS Intel® Celeron® J1900 quad-core 2.0 GHz processor 2GB DDR3L Hot-swappable 2 xGE 2 xUSB2.0 2 xUSB3.2 Hot-swappable 2yrs wty Facing the increasing demand for data storage, sharing and multimedia processing, more and more users are looking for a NAS system with good performance and an affordable price tag. The Intel® quad-core TS-251+ provides an uncompromising high-performance scalable storage solution for professional users. Powered by the intelligent QTS 4.2 operating system, the TS-251+ performs as an easy-to-use yet powerful NAS for data backup, file synchronization and sharing, remote access and multimedia applications, and is ideal for users to create a secure private cloud to access their data easily. CPU Intel® Celeron® J1900 quad-core 2.0 GHz processor (burst up to 2.42 GHz) CPU Architecture 64-bit x86 Graphic Processors Intel® HD Graphics System Memory 2 GB SO-DIMM DDR3L (1 x 2GB) Maximum Memory 8 GB (2 x 4GB) Memory Slot 2 x SO-DIMM DDR3L Flash Memory 512MB (Dual boot OS protection) Drive Bay 2 x 3.5-inch SATA 6Gb/s, 3Gb/s Hot-swappable Gigabit Ethernet Port (RJ45) 2 USB 2.0 port 2 USB 3.2 Gen 1 port 2 IR Sensor  (RM-IR002 & MCE) HDMI Output 1, (up to 1080p) Operating temperature 0 - 40 °C (32°F - 104°F) Power Supply Unit 60W/65W adapter, 100-240V Fan 1 x 70mm, 12VDC 2 yrs wty