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QNAP TS-251A User Manual

QNAP TS-251A
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do so.
10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically receives a license from
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are not responsible for enforcing compliance by third parties with this License.
An “entity transaction” is a transaction transferring control of an organization, or
substantially all assets of one, or subdividing an organization, or merging organizations. If
propagation of a covered work results from an entity transaction, each party to that
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party's predecessor in interest had or could give under the previous paragraph, plus a right
to possession of the Corresponding Source of the work from the 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.
11. 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
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the right to grant patent sublicenses in a manner consistent with the requirements of this

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QNAP TS-251A Specifications

General IconGeneral
Chassis typeTower
Cooling typeActive
Fan diameter70 mm
Number of fans1 fan(s)
Cable lock slotYes
Housing material-
Cable lock slot typeKensington
RAID levels0, 1, JBOD
Storage drive size2.5/3.5 \
Storage drive capacity- GB
Supported file systemsFAT32, HFS+, NTFS, ext3, ext4
Storage drive interfaceSerial ATA III
Storage drives installedNo
Supported storage drive typesHDD & SSD
Total installed storage capacity0 TB
Number of storage drives installed0
Number of storage drives supported2
SteppingD1
Tjunction90 °C
Processor codeSR2KN
Processor cache2 MB
Processor modelN3060
System bus rate5 GT/s
Processor familyIntel® Celeron®
Processor seriesIntel Celeron N3000 series
Processor socketBGA 1170
Processor codenameBraswell
Processor frequency1.6 GHz
Processor cache typeL2
Processor lithography14 nm
Processor manufacturerIntel
Processor package size25 x 27 mm
CPU configuration (max)1
PCI Express slots version2.0
Processor boost frequency2.48 GHz
Processor operating modes64-bit
PCI Express configurations1x2+2x1, 1x4, 2x2, 4x1
Thermal Design Power (TDP)6 W
Scenario Design Power (SDP)4 W
On-board graphics card modelIntel® HD Graphics 400
Maximum internal memory supported by processor8 GB
Memory slots2 x SO-DIMM
Internal memory4 GB
Internal memory typeDDR3L
Ethernet LAN data rates10, 100, 1000 Mbit/s
Supported network protocolsCIFS/SMB, AFP (v3.3), NFS(v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, and SMSC
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.
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity3
TypeNAS
Noise level18.3 dB
Device classHome & Home Office
Share folderWindows Server 2003, Windows Server 2003 R2, Windows Server 2003 x64, Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 R2 x64, Windows Server 2008 x64, Windows Server 2012, Windows Server 2012 R2
Backup featuresCloud, iSCSI LUN
Browser supportedMicrosoft Internet Explorer 10+, Mozilla Firefox 8+, Apple Safari 4+, Google Chrome
Security algorithms256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLS
Compatible memory cardsSD
Processor ARK ID91832
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)5 - 95 %
Cables includedAC, LAN (RJ-45)
Number of screws14
Power supply locationExternal
Operating system version4.2
Operating system installedQNAP Turbo System
Number of execution units12
Maximum number of PCI Express lanes4
Memory types supported by processorDDR3L-SDRAM
Memory channels supported by processorDual
Intel Identity Protection Technology version1.00
Intel Small Business Advantage (SBA) version0.00
On-board graphics card base frequency320 MHz
On-board graphics card DirectX version12.0
On-board graphics card burst frequency600 MHz
Weight and Dimensions IconWeight and Dimensions
Depth219 mm
Width102 mm
Height169 mm

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