The HS-251, powered by dual-core Intel® Celeron® 2.41GHz processor, was created as a silent NAS solution that allows users to enjoy files and media with no distractions, providing a perfect match for home theater enthusiasts and audiophiles looking to maximize their audiovisual experience and users who wish to constantly run their systems without any background noise. Coupled with the support of HDMI connectivity for 1080p video playback and hardware transcoding capability, the HS-251 is an ideal companion at home for multimedia entertainment. Being fanless, the HS-251 has no internal moving parts for improved reliability and remains clean and dust-free even after long-term usage. 
Powered by QNAP’s new QTS’s user interface, browsing the HS-251's wide range of features has never been easier. Featuring a multi-window operation with a familiar user interface, QTS makes controlling every aspect of your HS-251 – from system operations to multimedia features – fully accessible and easy to use. QTS enables you to:

  • Centralize your data, files and backups.
  • Sync files across computers, tablets and mobile devices, and share files across different groups and communities.
  • Collect, enjoy and share your large photo, music and video collections.
  • Stream HD movies & family videos to various network players.
  • Access, manage and enjoy all your files with your tablets & smartphones.
  • Expand the functionality of the HS-251 by installing more than 100 apps on demand from the QNAP App Center..
CPU : Intel® Celeron® 2.41GHz dual-core processor (burst up to 2.58GHz)
: HS-251: 1GB DDR3L RAM
Flash Memory : 512MB DOM
Hard Disk Drive : 2 x 3.5” or 2.5” SSD or NAS Hard Drives
  1. The system is shipped without HDD.
Hard Disk Tray : 2 x Hot-swappable tray
LAN Port : 2 x Gigabit RJ-45 Ethernet port
LED Indicators : Status, LAN
USB : 2 x USB 3.0 port
: 2 x USB 2.0 port
: Support USB printer, pen drive, and USB UPS etc.
HDMI : 1
Buttons : Power/Status, reset
Alarm Buzzer : System warning
IR Receiver : MCE-compatible
Form Factor : Compact
Dimensions : 302(H) x 220(W) x 41.3(D) mm
Weight : Net: 1.56 kg / Gross: 2.62 kg
Power Consumption (W) : HDD standby: 8.96W
: In operation:15.64W
: (with 2 x 3TB WD NAS HDD installed)
Temperature : 0-40ËšC
Humidity : 5~95% RH non-condensing, wet bulb: 27ËšC
Power Supply : External Power Adapter, 60W, 100-240V
Secure Design : Kensington security slot for theft prevention