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QNAP TS-251D User Manual

QNAP TS-251D
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7. Notices
This chapter provides information about warranty, disclaimers, licensing, and federal regulations.
Limited Warranty
QNAP offers limited warranty service on our products. Your QNAP-branded hardware product is warranted
against defects in materials and workmanship for a period of one (1) year or more from the date printed on
the invoice. ("Warranty Period"). Please review your statutory rights at www.qnap.com/warranty, which may
be amended from time to time by QNAP in its discretion.
Disclaimer
Information in this document is provided in connection with products of QNAP Systems, Inc. (the "QNAP").
No license, express or implied, by estoppels or otherwise, to any intellectual property rights is granted by this
document. Except as provided in QNAP's terms and conditions of sale for such products, QNAP assumes no
liability whatsoever, and QNAP disclaims any express or implied warranty, relating to sale and/or use of
QNAP products including liability or warranties relating to fitness for a particular purpose, merchantability, or
infringement of any patent, copyright or other intellectual property right.
QNAP products are not intended for use in medical, life saving, life sustaining, critical control or safety
systems, or in nuclear facility applications.
In no event shall QNAP’s liability exceed the price paid for the product from direct, indirect, special,
incidental, or consequential damages resulting from the use of the product, its accompanying software, or its
documentation. QNAP makes no warranty or representation, expressed, implied, or statutory, with respect to
its products or the contents or use of this documentation and all accompanying software, and specifically
disclaims its quality, performance, merchantability, or fitness for any particular purpose. QNAP reserves the
right to revise or update its products, software, or documentation without obligation to notify any individual or
entity.
Back up the system periodically to avoid any potential data loss is recommended. QNAP disclaims any
responsibility of all sorts of data loss or recovery.
Should you return any components of the package of QNAP products such as NAS (Network Attached
Storage) for refund or maintenance, make sure they are carefully packed for shipping. Any form of damages
due to improper packaging will not be compensated.
All the features, functionality, and other product specifications are subject to change without prior notice or
obligation. Information contained herein is subject to change without notice.
Further, the ® or ™ symbols are not used in the text.
GNU Public License
Version 3, 29 June 2007
Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not
allowed.
Preamble
The GNU General Public License is a free, copy left license for software and other kinds of works.
The licenses for most software and other practical works are designed to take away your freedom to share
and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom
to share and change all versions of a program--to make sure it remains free software for all its users. We, the
TS-251D User Guide
Notices 42

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QNAP TS-251D Specifications

General IconGeneral
TypeNAS
Noise level16.7 dB
Device classHome & Home Office
Share folderCIFS/SMB, FTP, WebDAV
Backup featuresCloud, USB drive
Backup functionYes
Browser supportedApple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla Firefox
Security algorithms256-bit AES, FIPS 140-2, SNMPv3, SSH, SSL/TLS
Storage temperature (T-T)-20 - 70 °C
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)5 - 95 %
Chassis typeTower
Cooling typeActive
Fan diameter70 mm
Product colorWhite
LED indicatorsHDD, LAN, Power, Status, USB
Number of fans1 fan(s)
Cable lock slot typeKensington
Fiber ports quantity0
USB 2.0 ports quantity3
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
Wi-FiNo
Ethernet LAN data rates1000 Mbit/s
Supported network protocolsTCP/IP, PTP, L2TP/IPSec, OpenVPN, QBelt(, FTP, SFTP, TFTP
Flash memory4000 MB
Internal memory4 GB
Memory form factorSO-DIMM
Internal memory typeDDR4
Maximum RAM supported8 GB
Cables includedAC, LAN (RJ-45)
Number of screws14
Tjunction105 °C
Processor cache4 MB
Processor modelJ4005
System bus rate- GT/s
Processor familyIntel® Celeron®
Processor socketBGA 1090
Processor codenameGemini Lake
Processor frequency2 GHz
Processor lithography14 nm
Processor manufacturerIntel
Processor package size25 x 24 mm
Processor boost frequency2.7 GHz
Processor operating modes64-bit
PCI Express configurations1x2, 1x2+2x1, 1x4, 2x1, 4x1
Thermal Design Power (TDP)10 W
On-board graphics card modelIntel® UHD Graphics 600
Fan voltage12 V
AC input voltage100 - 240 V
AC input frequency50 - 60 Hz
Power supply locationExternal
Power consumption (sleep)8.08 W
Power consumption (typical)15.25 W
Power supply unit (PSU) capacity65 W
Operating system version5.0.0
Operating system installedQNAP QTS
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 10.14 Mojave, Mac OS X 10.15 Catalina, 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 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019
Windows operating systems supportedWindows 10, Windows 7, Windows 8
RAID levels0, 1, JBOD
Storage drive size- \
Storage drive capacity0 GB
Supported file systemsFAT32, HFS+, NTFS, ext3, ext4
Storage drive interface-
Storage drive sizes supported3.5 \
Supported storage drive typesHDD & SSD
Total installed storage capacity0 TB
Supported storage drive interfacesSerial ATA II, Serial ATA III
Number of execution units12
Maximum number of PCI Express lanes6
Memory types supported by processorDDR4-SDRAM, LPDDR4-SDRAM
Intel Smart Response Technology version0.00
Intel Identity Protection Technology version1.00
On-board graphics card ID0x3185
On-board graphics card base frequency250 MHz
On-board graphics card DirectX version12.0
On-board graphics card dynamic frequency (max)700 MHz
Processor ARK ID128992
Harmonized System (HS) code84714100
Weight and Dimensions IconWeight and Dimensions
Depth226 mm
Width105 mm
Height168 mm
Weight1480 g
Package weight2580 g

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