- CPU: Quad-Core Intel(R) Celeron(R) 2. 0GHz (burst up to 2. 42GHz) - Floating Point Unit: V - GPU: Intel(R) HD Graphics - Hardware-Acclerated Transcoding: V - Memory: System memory: TS-251+-2G: 2GB DDR3L RAM (1 x 2GB) TS-251+-8G: 8GB DDR3L RAM (2 x 4GB) Total memory slots: 2 SODIMM Expandable up to: 8 GB NOTE: 1. When installing two memory modules, please ensure that they are the same size and ideally use the same type of RAM for both memory slots. 2. For the information of RAM module installation and compatible NAS models, please refer to the QNAP RAM Module Installation Guide - Flash Memory: 512MB - Drive: 2 x 2. 5\" or 3. 5\" SATA 6Gb/s, 3Gb/s HDD or SSD; hot swappable trays NOTE: For the HDD compatibility list, please visit https://www. qnap. com/compatibility - Expansion Unit: Max. 1 (UX-800P, UX-500P) - Gigabit LAN Ports: 2 - USB: 2 x USB 3. 0 (Front: 1, Rear: 1) 2 x USB 2. 0 (Rear) - IR Receiver: Yes (QNAP RM-IR002 remote control) - HDMI: 1 - LED Indicators: Power/Status, LAN, USB, HDD1-2 - Buttons: Power, Reset, USB Auto Copy - Alarm Buzzer: System warning - Form Factor: Tower - Dimensions: (Hx Wx D) 168. 5 x 102 x 225 mm 6. 63 x 4. 02 x 8. 86 inch - Weight: (Net / Gross) 1. 28 kg (2. 82 lbs) / 2. 32 kg (5. 11 lbs) - System Fan: 1 x 7cm, 12V DC - Kensington Security Slot: 1 - Power Supply: External Power Adapter, 60W, 100-240V - Power Consumption (W): S3 sleep: 0. 57 HDD standby: 10. 56 In operation (typical): 18. 09 - Temperature: 0 - 40 ?C - Humidity: 5~95% RH non-condensing, wet bulb: 27 C - Package Contents: TS-251+ Ethernet cable x 2 Quick installation guide (QIG) Flat head screw x 8 (for 3. 5\" HDD) Flat head screw x 6 (for 2. 5\" HDD) AC Adapter: SP-2BAY-ADAPTOR Power cord x 1 IR Remote Control: RM-IR002