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QNAP TS-251B User Manual

QNAP TS-251B
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If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the
conditions of this License, they do not excuse you from the conditions of this License. If you cannot
convey a covered work so as to satisfy simultaneously your obligations under this License and any
other pertinent obligations, then as a consequence you may not convey it at all. For example, if you
agree to terms that obligate you to collect a royalty for further conveying from those to whom you
convey the Program, the only way you could satisfy both those terms and this License would be to
refrain entirely from conveying the Program.
14. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have permission to link or combine any
covered work with a work licensed under version 3 of the GNU Affero General Public License into a
single combined work, and to convey the resulting work. The terms of this License will continue to apply
to the part which is the covered work, but the special requirements of the GNU Affero General Public
License, section 13, concerning interaction through a network will apply to the combination as such.
15. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of the GNU General Public
License from time to time. Such new versions will be similar in spirit to the present version, but may
differ in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the Program specifies that a certain numbered
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following the terms and conditions either of that numbered version or of any later version published by
the Free Software Foundation. If the Program does not specify a version number of the GNU General
Public License, you may choose any version ever published by the Free Software Foundation.
If the Program specifies that a proxy can decide which future versions of the GNU General Public
License can be used, that proxy's public statement of acceptance of a version permanently authorizes
you to choose that version for the Program.
Later license versions may give you additional or different permissions. However, no additional
obligations are imposed on any author or copyright holder as a result of your choosing to follow a later
version.
16. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE
LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM
PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
CORRECTION.
17. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE
PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR
DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES
OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.
18. Interpretation of Sections 16 and 17.
If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect
according to their terms, reviewing courts shall apply local law that most closely approximates an
absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of
liability accompanies a copy of the Program in return for a fee.
TS-251B User Guide
Notices 52

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QNAP TS-251B Specifications

General IconGeneral
RAID levels0, 1, JBOD
RAID supportYes
Storage drive size- \
Storage drive capacity- GB
Supported file systemsFAT32, HFS+, NTFS, exFAT, ext3, ext4
Storage drive interfaceSerial ATA III
Storage drives installedNo
Storage drive sizes supported2.5, 3.5 \
Supported storage drive typesHDD & SSD
Total installed storage capacity0 TB
Number of storage drives installed0
Number of storage drives supported2
SteppingB1
Tjunction105 °C
Processor codeSR2Z8
Processor cache2 MB
System bus rate5 GT/s
Processor familyIntel® Celeron®
Processor socketBGA 1296
Processor codenameApollo Lake
Processor frequency2 GHz
Processor cache typeSmart Cache
Processor lithography14 nm
Processor manufacturerIntel
Processor package size24 x 31 mm
CPU configuration (max)1
PCI Express slots version2.0
Processor boost frequency2.5 GHz
Processor operating modes64-bit
PCI Express configurations1x2+2x1, 4x1
Thermal Design Power (TDP)10 W
On-board graphics card modelIntel® HD Graphics 500
Maximum internal memory supported by processor8 GB
Flash memory4096 MB
Internal memory2 GB
Internal memory typeDDR3L
Ethernet LAN data rates10, 100, 1000 Mbit/s
Supported network protocolsPPTP, L2TP/IPSec, OpenVPN
HDMI version1.4b
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Chassis typeTower
Cooling typeActive
Fan diameter70 mm
Product colorWhite
LED indicatorsHDD, LAN, Power, Status, USB
Number of fans1 fan(s)
Cable lock slot typeKensington
TypeNAS
Noise level17.3 dB
Device classHome & Home Office
Share folderCIFS/SMB
Backup featuresUSB drive
Browser supportedApple Safari 7 or later, Google Chrome, Microsoft Internet Explorer 10 or later, Mozilla Firefox
Security algorithms256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLS
AC input voltage100 - 240 V
Power supply locationExternal
Power consumption (typical)15.25 W
Power consumption (HDD standby)8.08 W
Power supply unit (PSU) capacity65 W
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)5 - 95 %
Operating system version4.3.4
Operating system installedQNAP Turbo System
Mac operating systems supportedMac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
Server operating systems supportedWindows Server 2003, Windows Server 2003 x64, Windows Server 2008 R2, Windows Server 2008 R2 x64, Windows Server 2012, Windows Server 2012 R2, Windows Server 2012 R2 x64, Windows Server 2012 x64, Windows Server 2016, Windows Server 2016 x64
Windows operating systems supportedWindows 10, Windows 7, Windows 8
Cables includedAC, LAN (RJ-45)
Number of execution units12
Maximum number of PCI Express lanes6
Memory types supported by processorDDR3L, LPDDR3-SDRAM, LPDDR4-SDRAM
Memory channels supported by processorDual
Intel Identity Protection Technology version1.00
Intel Small Business Advantage (SBA) version0.00
On-board graphics card base frequency250 MHz
On-board graphics card burst frequency700 MHz
Number of displays supported (on-board graphics)3
Processor ARK ID95597
Weight and Dimensions IconWeight and Dimensions
Depth226 mm
Width105 mm
Height168 mm
Weight1530 g

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