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QNAP TS-251B User Manual

QNAP TS-251B
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predecessor in interest, if the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the rights granted or affirmed under this
License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights
granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in
a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or
importing the Program or any portion of it.
12. Patents.
A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on
which the Program is based. The work thus licensed is called the contributor's “contributor version”.
A contributor's “essential patent claims” are all patent claims owned or controlled by the contributor,
whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by
this License, of making, using, or selling its contributor version, but do not include claims that would be
infringed only as a consequence of further modification of the contributor version. For purposes of this
definition, “control” includes the right to grant patent sublicenses in a manner consistent with the
requirements of this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the
contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify
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agreement or commitment not to enforce a patent against the party.
If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of
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this License, to extend the patent license to downstream recipients. “Knowingly relying” means you
have actual knowledge that, but for the patent license, your conveying the covered work in a country, or
your recipient's use of the covered work in a country, would infringe one or more identifiable patents in
that country that you have reason to believe are valid.
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procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving
the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered
work, then the patent license you grant is automatically extended to all recipients of the covered work
and works based on it.
A patent license is “discriminatory” if it does not include within the scope of its coverage, prohibits the
exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically
granted under this License. You may not convey a covered work if you are a party to an arrangement
with a third party that is in the business of distributing software, under which you make payment to the
third party based on the extent of your activity of conveying the work, and under which the third party
grants, to any of the parties who would receive the covered work from you, a discriminatory patent
license (a) in connection with copies of the covered work conveyed by you (or copies made from those
copies), or (b) primarily for and in connection with specific products or compilations that contain the
covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28
March 2007.
Nothing in this License shall be construed as excluding or limiting any implied license or other defenses
to infringement that may otherwise be available to you under applicable patent law.
13. No Surrender of Others' Freedom.
TS-251B User Guide
Notices 51

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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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