QNAP TS-251B
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QNAP TS-251B

Available: In Stock
Official Warranty 24 Months
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€318,90 €329,00
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First home/SOHO Intel dual-core NAS with a PCIe slot for extending NAS functionality

intel-cellron hd hdmidlna

The TS-251B combines secure data storage and multimedia entertainment into one device. Featuring a PCIe slot, the TS-251B is QNAP’s first home/SOHO NAS that allows you to flexibly extend its functionality and potential applications. You can install a QNAP QM2 card to provide M.2 SSD caching/10GbE connectivity and use with Qtier auto-tiering storage to enhance overall system performance; or install a wireless network card (such as the QNAP QWA-AC2600) to turn the TS-251B into a wireless access point and to wirelessly stream your multimedia throughout your home. The TS-251B supports dual-channel H.264 hardware decoding and transcoding, allowing you to enjoy watching NAS media files smoothly across various devices.

Manufacturer's product description link in EN: Click

Manufacturer's product description link in CZ: Click

First home/SOHO Intel dual-core NAS with a PCIe slot for extending NAS functionality

intel-cellron hd hdmidlna

The TS-251B combines secure data storage and multimedia entertainment into one device. Featuring a PCIe slot, the TS-251B is QNAP’s first home/SOHO NAS that allows you to flexibly extend its functionality and potential applications. You can install a QNAP QM2 card to provide M.2 SSD caching/10GbE connectivity and use with Qtier auto-tiering storage to enhance overall system performance; or install a wireless network card (such as the QNAP QWA-AC2600) to turn the TS-251B into a wireless access point and to wirelessly stream your multimedia throughout your home. The TS-251B supports dual-channel H.264 hardware decoding and transcoding, allowing you to enjoy watching NAS media files smoothly across various devices.

Manufacturer's product description link in EN: Click

Manufacturer's product description link in CZ: Click

CPU Intel® Celeron® J3355 dual-core 2.0 GHz processor (burst up to 2.5 GHz)
Architecture: 64-bit x86
Graphics Intel® HD Graphics 500
Encryption Acceleration  (AES-NI)
System Memory 1 x 4 GB DDR / 1 2 GB DDR3
Maximum Memory 8 GB (2 x 4 GB)
Memory Slot 2 x SODIMM DDR3L up to 1866, with dual-channel support
Flash Memory 4GB eMMC
Drive Bay 2 x 3.5" SATA 6 Gbps HDD
Drive Compatibility • 3.5" SATA 6Gb/s HDD
• 2.5" SATA 6Gb/s HDD
• 2.5" SATA 6Gb/s SSD
SSD Cache Acceleration Support 3.5" drive bay:1 to 2
Gigabit Ethernet Port 1 x RJ45
USB Port 2 x USB 3.0, 3 x USB 2.0
USB One Touch Copy Front:USB 3.0 Type-A
PCIe Slot 1 PCIe 2.0 x2 slot
HDMI Output 1 x HDMI v1.4b (up to 3840 x 2160 resolution at 30 Hz)
IR sensor , supporting QNAP RM-IR004 remote control (optional purchase)
Audio 1 x speaker, 2 x MIC Input
1 x 3.5 mm line-out jack
Alarm buzzer
Note: You cannot use the speakers and the line-out jack simultaneously.
LED Indicators Status/power、LAN、USB、HDD 1 - 2
Buttons Power, Reset, USB One-touch-copy
System Warning Alarm buzzer and voice prompts
Form Factor Tower
Dimensions (H x W x D) 168 x 105 x 226 mm ( 6.61 x 4.13 x 8.90 inch)
Net Weight 1.53 kg (3.37 lbs)
Power Consumption (W) HDD standby:8.08 W
In operation:15.25 W
(with 2 x 1TB HDDs installed)
Sound Level Sound pressure (LpAm): 17.3 dB(A)
Power Supply Unit 65W AC adapter, 100-240V
Fan 1 x 7 cm
Operating Temperature & Relative Humidity 0 ~ 40˚C ( 32˚F ~ 104˚F ), 5 ~ 95% RH non-condensing, wet bulb: 27˚C (80.6˚F)
Other Interfaces Kensington security slot

Note: Use only QNAP memory modules to maintain system performance and stability. For NAS devices with more than one memory slot, use QNAP modules with identical specifications. Warning: Using unsupported modules may degrade performance, cause errors, or prevent the operating system from starting. 
* Sound Level Test Environment: Refer to ISO 7779; Maximum HDD loaded; Bystander Position; Average data from 1 meter in front of operating NAS.
Designs and specifications are subject to change without notice.

Operating System

QTS 4.3.4 (embedded Linux)

Supported Client Operating Systems
  1. Apple Mac OS 10.7 or later
  2. Linux and UNIX
  3. Microsoft Windows 7, 8, and 10
  4. Microsoft Windows Server 2003, 2008 R2, 2012, 2012 R2 and 2016
Supported Browsers
  1. Apple Safari 7 or later
  2. Google Chrome
  3. Microsoft Internet Explorer 10 or later
  4. Mozilla Firefox
Supported Languages

Chinese (traditional and simplified), Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Brazil), Romanian, Russian, Spanish, Swedish, Thai, and Turkish

Supported File Systems
  1. Internal hard drive (EXT4)
  2. External hard drive (EXT3, EXT4, NTFS, FAT32, HFS+, and exFAT)
    Note: To use exFat you must purchase an exFAT driver license from License Center.
Network & Virtual Switch
  1. TCP/IP: Dual stack (IPv4 and IPv6)
  2. Jumbo frame (failover, multi-IP settings, port trunking/NIC teaming)
  3. DHCP server and client
  4. USB Wi-Fi adapter
    Note: This feature does not support ad hoc networks because of security considerations.
  5. Virtual switch
  • Virtual switch editing in Virtualization Station
  • Combining virtual machines and containers in the same virtual switch
  • Network Address Translation (NAT)
  • Spanning Tree Protocol (STP)
  • WirelessAP Station
Security
  1. Network access protection with auto-blocking (SSH, Telnet, HTTP(S), FTP, CIFS/SMB, and AFP)
  2. Host access control for shared folders (CIFS/SMB)
  3. AES 256-bit folder-based and volume-based encryptions which are validated by FIPS 140-2 CAVP (Cryptographic Algorithm Validation Program)
  4. 256-bit external drive encryption (AES)
  5. Importing of SSL certificates from Let’s Encrypt
  6. Instant alerts through email, SMS, push service, and audio
  7. 2-step verification
iSCSI (IP SAN)
  1. iSCSI targets with multiple LUNs per target
    Note: The maximum number of targets is 256.
  2. LUN mapping and masking
  3. Online LUN capacity expansion
  4. SPC-3 persistent reservation
  5. MPIO & MC/S
  6. iSCSI Extensions for RDMA (iSER) with VMware ESXi
    Note: This feature requires a compatible Mellanox network card.
  7. iSCSI LUN backup, one-time snapshot, and restoration
  8. Virtual disks using iSCSI initiator
    Note: The maximum number of virtual disks is eight.
  9. Stack chaining master
Power Management
  1. Wake-on-LAN (WoL)
  2. Standby mode for internal drives
  3. Scheduled power on and off
  4. Automatic power on after power recovery
  5. USB and network UPS support with SNMP management
Access Rights Management
  1. Multiple user creation
  2. User data importing and exporting
  3. User quota management
  4. Local user access control (AFP, CIFS/SMB, FTP, and WebDAV)
  5. Application access control (File Station, Music Station, Photo Station, and Video Station)
  6. Subfolder permissions (AFP, CIFS/SMB, FTP, and File Station)
Domain Authentication
  1. Microsoft Active Directory (AD) and domain controller support
  2. LDAP server and client
  3. Domain user login (AFP, CIFS/SMB, FTP, and File Station)
myQNAPcloud
  1. Free host name registration (DDNS)
  2. Optional myQNAPcloud SSL certificates (DDNS)
  3. Auto router configuration using UPnP
  4. Web-based file manager with HTTPS 2048-bit encryption
  5. CloudLink for remote access without complex router setup
Qsync
  1. File syncing across multiple devices with SSL secure connection
  2. Selective synchronization for specific folders or subfolders
  3. Team folders as file center for better collaboration
    Note: The maximum number of sync tasks is 32.
  4. File sharing using email links
  5. Policy settings for conflicting files and file type filter
  6. Version control for a maximum of 64 versions
  7. Unified privilege and configuration management
  8. Central configuration mode
  9. Remote erase and restore
  10. Windows and Mac OS support
Resource Monitor
  1. Monitoring of NAS system resources such as CPU, memory and network
  2. Monitoring of NAS storage resources such as volumes, RAID, and disk activity
  3. Monitoring of NAS application resource use
  4. Creation of extra swap space when SSDs are installed
Helpdesk
  1. Reporting of issues to the QNAP support team, with automatic collection of system information
  2. Remote connection between QNAP support engineers and NAS for issue resolution (with user permission)
Web Administration
  1. Multi-window, multitasking system management
  2. Smart toolbar and dashboard for system status display
  3. Dynamic DNS (DDNS)
  4. SNMP versions 2 and 3
  5. Resource monitor
  6. Network recycle bin
  • Recover files deleted using AFP, CIFS/SMB, and File Station
  • Automatic cleanup
  • File type filter
  • Comprehensive logs (events and connections)
  • Syslog server and client
  • Backup and restoration of system settings
  • Qmanager: Mobile application for remote system monitoring and management
  • Qboost
File Server
  1. File sharing across Windows, Mac, and Linux/UNIX
  2. Microsoft networking
  3. Windows ACL
  4. Advanced folder permissions (AFP, CIFS/SMB, and FTP)
  5. Shared folder aggregation (CIFS/SMB)
FTP Server
  1. FTP over SSL/TLS (explicit)
  2. FXP support
File Station
  1. Cloud drive mounting for Google Drive, Dropbox, Microsoft OneDrive, Microsoft OneDrive for Business, HiDrive, Amazon Cloud Drive, Yandex Disk and Box
  2. Remote shared folder mounting (CIFS/SMB, FTP, and WebDAV)
  3. Document viewing using Office Online, Google Docs, and Chrome extension
  4. Microsoft Office file editing using Google Docs, Sheets, and Slides
  5. ISO file mounting (maximum: 256 ISO files)
  6. Mount smart phones as external storage
  7. Read access for compatible optical disc drives
  8. Read access for compatible smartphones (MTP)
  9. Download and upload link sharing
  10. File dragging and dropping (Chrome and Firefox)
  11. Photos, video, and music preview and playback with hardware-accelerated transcoding
  12. File compression (ZIP and 7z)
  13. Download link creation and sending for publicly shared files, with expiration date and password protection
  14. Subtitle display (SRT and UTF-8)
  15. Video seeking during on-the-fly transcoding video playback
  16. Slideshow playback in media viewer
  17. Qfile: Mobile app for file browsing and management
Qfiling
  1. Auto filing
  2. Recipe function
  3. Archiving through iSCSI, USB, DVD and remote NAS
  4. Advanced settings
  • File deletion
  • Intelligent subtitle filing for videos
  • Data integrity check
  • File conflict policy
Transcode Management
  1. Video transcoding (240p, 360p, 480p, 720p and 1080p resolution)
  2. Automatic video transcoding for watched folders
  3. Hardware-accelerated transcoding
  4. Embed subtitles into videos for background transcoding
Hybrid Backup Sync
  1. Cloud storage backup to Amazon S3, Amazon Glacier, Microsoft Azure, Google Cloud Storage, Openstack Swift, WebDAV, and HKBN
  2. Cloud storage syncing with Microsoft OneDrive, Google Drive, Dropbox, Amazon Drive, Yandex Disk, Box, hubiC, BackBlaze B2, Amazon S3, and HiDrive
  3. RTRR server & client with bandwidth control
  4. Rsync server with download bandwidth control
  5. Remote server syncing (CIFS/SMB, FTP, Rsync, and RTRR)
  6. Scheduled backup to local and remote storage spaces
  7. Backup versioning (RTRR)
  8. Encryption, compression, and file filters
  9. Centralized management for backup, restoration, and sync jobs
  10. Support for Apple Time Machine
  11. Data backup to multiple external storage devices
  12. Desktop backup with QNAP NetBak Replicator for Windows
  13. Support for the following third-party backup software: Veeam Backup & Replication, Acronis True Image, Arcserve Backup, Retrospect, Nakivo Backup & Replication, and Veritas Backup Exec
Cloud Drive Sync
  1. Support for the following cloud services: Google Drive, Dropbox, OneDrive, OneDrive for Business and hubiC
  2. Add and manage multiple cloud accounts
  3. Manual, scheduled, periodic and continuous sync
  4. Flexible file filtering using type, date, and size
  5. SSL transfer encryption
  6. Dashboard and job statistics
  7. Configurable network error recovery options
  8. Extensive job activity logging for tracing history of status and statistics
  9. Concurrent job execution and multi-threaded data transfer
  10. Bandwidth throttling for individual accounts
Photo Station
  1. Photo organization by thumbnail, list, timeline, or folder
  2. Virtual and smart albums
  3. Validity control for album sharing
  4. Photo tagging with text, colors, and ratings
  5. Slideshows with background music and transition effects
  6. Photo geotagging and display on Google Maps
  7. Photo and video uploading to Picasa, Flickr, and Weibo
  8. Album configuration backup and restoration
  9. Advanced folder permissions
  10. Support for domain users
  11. Photo Station Extension: Supports face detection and PDF to image
  12. Qphoto: Mobile application for online browsing and sharing
Music Station
  1. Music playing and sharing through web browsers
  2. Music streaming to multiple devices
  3. Changing of album covers through Google search or by uploading photos
  4. Internet radio (MP3)
  5. Eight music alarms
  6. Switching between spotlight mode and manage mode
  7. Advanced search
  8. Scrolling lyrics
  9. Qmusic: Mobile application for music streaming and management
iTunes Server

Audio and video sharing for Windows & Mac iTunes

Video Station
  1. Video organization by thumbnail, list, timeline, or folder
  2. Virtual and smart collections
  3. Video tagging with text, colors, and ratings
  4. Video link sharing through social media and email
  5. Movie information and poster display from Internet sources or user-uploaded files
  6. Subtitle display (SRT, ASS, SSA)
  7. Subtitle search and downloading
  8. Subtitle file importing
  9. Subtitle display style adjustment
  10. Playback speed adjustment
  11. Direct video streaming for certain file formats
  12. Facebook login
  13. Advanced folder permissions
  14. Support for LDAP users
  15. Video uploading to YouTube and Youku
  16. Multi-zone video display
  17. Video-seeking support for video playback during on-the-fly transcoding
  18. Qvideo: Mobile application for online video browsing and management
Cinema28
  1. Supports streaming of audio, video, and photos.
  2. Uses Qsirch to improve file searches.
  3. Includes Basic and Advanced usage modes.
  4. Supports streaming from multiple sources: NAS, USB storage devices, Blu-ray/DVD players, mobile devices, SD cards, FTP, SMB (CIFS), and WebDAV.
  5. Supports streaming to multiple media devices: Apple TV, Chromecast, DLNA, QNAP HD Player, HDMI, audio line out, Bluetooth, and USB DAC.
Virtualization Station
  1. Virtual machine creation (Windows, Linux, Unix, and Android)
  2. Virtual machine importing, exporting, cloning, snapshot capturing, backup, and restoration
  3. Console display using HDMI output (QVM)
  4. HTML5-based shared remote console
  5. Various networking modes using virtual switches
Container Station
  1. Supports for LXC and Docker
  2. Application downloading from the built-in Docker Hub Registry
  3. One-click installation
  4. Container importing and exporting
  5. Console mode
    Three networking modes (Note: Docker containers support Bridge, NAT, and Host mode. Linux containers (LXC) support only NAT.)
  6. Auto-start containers
  7. Docker certificate downloading
  8. Private registry addition
  9. Application repository for switching to any repository on GitHub.com
Qsirch
  1. Full-text search
  2. Data distribution using a bar chart
  3. Previews for photos, music, videos, PDFs, Gmail, and others
  4. Advanced search operators and search scope
  5. Customized search filters with included or excluded conditions
  6. Related files suggestion in Viewer
  7. Search Chrome extension
QVR Pro
  1. Support for up to 128 camera channels
    Note: The maximum number of channels supported varies by NAS model, network configuration, and camera settings. For more information, visit https://www.qnap.com/go/qvr-nas-selector.
  2. Camera management across different networks
  3. Pre-allocation of dedicated recording spaces
  4. Specifying trigger events and corresponding actions
  5. Data sources paired with cameras for quick search
QVR Pro Client
  1. Instant switch between Live and Playback modes
  2. Dynamic and adjustable layouts for camera views
  3. Support for multiple platforms, including Windows, macOS, Ubuntu, QNAP HybridDesk Station, Android and iOS
QVR Center
  1. Support for managing up to 128 QVR Pro servers (QVR Pro Gold license required)
  2. Statistical graphics for visualizing event data
  3. Log management for all added servers
  4. Integration with QVR Pro Client for central monitoring across multiple servers
  5. Centralized views using cameras from multiple servers
QVR Guard
  1. Failover solution designed for QVR Pro to ensure server availability
  2. Viewing task details during the failover period
Surveillance Station
  1. Support for over 5,000 IP cameras
  2. Two free camera licenses
    Note: The application supports a maximum of 32 camera channels. You can purchase additional licenses on the QNAP website.
  3. Instant playback for checking of recent events
  4. Visual aid using e-map
  5. Playback and speed control using the shuttle bar
  6. Video preview on playback timeline
  7. Intelligent video analytics (IVA) for advanced video searching
  8. Surveillance client for Mac
  9. Vmobile: Mobile surveillance application for iOS and Android
  10. Vcam: Mobile recording application for iOS and Android
QVPN Service
  1. VPN server
  • Secure remote access with PPTP, L2TP/IPSec, and OpenVPN services
  • Support for a maximum of 100 clients
  • Support for domain users
  • VPN client
  • Support for PPTP, L2TP/IPSec, and OpenVPN VPN protocols
  • OVPN file importing for creation of OpenVPN connections
  • Easy VPN connection (Windows VPN utility)

Note: QVPN combines an integrated VPN Server, a VPN client, and L2TP/IPSec VPN services.

DLNA Server
  1. Support for DLNA/UPnP TVs and players such as PlayStation 4 and Xbox One
  2. Support for CUE indexing file for APE and FLAC
Q’center (NAS CMS)
  1. Monitoring of multiple NAS devices
  2. Utilization history reports
  3. Unified configuration management
  4. Monitoring of NAS devices behind NAT routers with Connect to Q’center

Note: The application is available in the App Center and in virtual appliance marketplaces (VMware vSphere ESXi and Microsoft Hyper-V).

OceanKTV
  1. YouTube video streaming
  2. Sorting by artist, language, and favorites
  3. Effects such as tuning echo, key, and applause
  4. Playlist control with a mobile application
  5. Support for keyboard and remote control (RM-IR004)

Note: Microphones are not included.

Qfinder Pro
  1. QNAP NAS location on the same local network
  2. NAS shared folder mounting
  3. Basic setting configuration (firmware, SMTP server, and network settings)
  4. Storage Plug & Connect (Windows only)
  • Creation and mapping of NAS shared folders
  • Creation of and connection to iSCSI targets and LUNs
  • Media upload (Windows only)
  • Media file upload to the NAS
  • Automatic creation of thumbnails or transcoding of videos using the computer
App Center
  1. Official and community software add-ons
  2. Automatic updates and notifications for new versions
  3. Repository for imported third-party content
  4. User-specified volume for storing applications
AirPlay & Chromecast
  1. Video, photo and music streaming to Apple TV or Chromecast using the following:
  • NAS applications: File Station, Music Station, Photo Station, and Video Station
  • Mobile applications: Qfile, Qmusic, Qphoto, and Qvideo

Note: You must install the Media Streaming add-on from App Center.

Download Station
  1. PC-less downloads (BitTorrent, FlashGet, FTP/FTPS, HTTP/HTTPS, QQDL, and Thunder)
    Note:
  • The application supports a maximum of 500 tasks.
  • The maximum number of concurrent downloads is 90 (30 BT/PT, 30 HTTP, 30 FTP)
  • BitTorrent: Support for search, magnet links, private trackers, and proxy
  • Scheduled download and bandwidth control
  • RSS subscription and download (broadcatching)
  • Support for add-ons that extend download functionality
  • Qget: Mobile application for download browsing and management
Notes Station 3
  1. Multi-user text editing using the collaborative editor
  2. Table creation using the spreadsheet editor
  3. Online quick preview of multimedia attachments
  4. Smart snapshot for version control
HD (HybridDesk) Station 3.13
  1. Photo, video, and music playback on TV through HDMI
  2. Support for Chrome and Firefox
  3. Support for international keyboards and mouse input
  4. User login permissions

Note: The decoding capability of the CPU and graphics card may affect playback of some video files.

Linux Station
  1. Usage of the NAS as a Linux-based computer
  2. Support for Ubuntu 14.04, Ubuntu 16.04 and Ubuntu Kylin 16.04
  3. Application downloading and usage from the Ubuntu Software Center
  4. Remote desktop for remote monitoring and accessing of Ubuntu

Note: The application requires at least 4 GB of memory and installation of Container Station.

Qcontactz
  1. One-way scheduled sync of contacts from multiple Google accounts
  2. Contact importing from CSV or vCard 3.0 files
  3. Contact exporting to CSV or vCard 3.0 files
  4. Duplicate contact searching and merging
  5. Snapshot management for contacts database
  6. Contact management: Groups, favorites, lock, search, delete and restore
  7. Support for Android and iOS
IFTTT Agent
  1. Daily task automation
  2. Social media data archiving
  3. File synchronization between the NAS and various cloud services
  4. System event notifications on Line, Skype, Gmail, and mobile phones
  5. Music playback on Music Station using Amazon Echo voice commands
  6. Usage of motion detection sensors as trigger for camera recording on Surveillance Station
General Notes
  1. Designs and specifications are subject to change without notice.
  2. Some features may vary by model.
  3. QTS does not support DRM content and some IPv6 services.
  4. Some data encryption features may be unavailable because of country-specific legislative restrictions.
Web Server
  1. HTTP/HTTPS Connections
  2. Supports WebDAV Connection
  3. Supports Virtual Host (Max: 32)
  4. Importable SSL Certificate

Shipping Scope

Currently our shipping destinations are Slovakia, Austria, Hungary and Czech. If you are from other counties and would like to order, please check with us in advance for the logistics fee. 

Delivery Time (Order and Pay before 15:00)

  • Delivery to Slovakia / Austria will arrive in AVERAGE of 2 working days
  • Delivery to Hungary will arrive in AVERAGE of 3 working days
  • Delivery to Czech will arrive in AVERAGE of 4-5 working days depends on weight

Stock Information

We're updating Stock information in daily basis, but not real time. If you have strict deadline for delivery, please check with us before ordering.

Delivery fee

Delivery will be for free for specific products to some countries. Actual delivery fee will be calculated automatically in purchase page.

Key Message about Return

We offer 14 days 100% free return policy to our customers with limited exceptions:

  • The good is damaged or harmed on functionalities or appearance due to buyer's responsibility.
  • Part of the package or accessary is lost due to buyer's responsibility. In this case we will still accept return, but buyer should bear reasonable deduction on refund.
  • Customized goods, Perishable goods, Downloadable software products, Gift Cards.

*Delivery cost to return the goods should be covered by buyer.

Full terms of Return & Refund policy can be found here.

How to Return within 14 days

Send following information to service@comforty.store

  • Contact information
  • Item to be returned and scan of invoice
  • Scan of Personal Identification document
  • Short description of why to return* 

Then our service will contact you as soon as possible to sign a Return & Refund agreement.

*This information will help us to improve our service and provide better experience to customer.

Claim a DOA (Damaged On Arrival)

Send following information to service@comforty.store

  • Contact information (Name, Mobile Phone Number, Email Address)
  • Short description of the problem about the product
  • Scan of Invoice