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QNAP TS-251+ User Manual

QNAP TS-251+
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5
FCC Class B Notice
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may
cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
Consult the dealer or an experienced radio/television technician for help.
Modifications: Any modifications made to this device that are not approved by QNAP
Systems, Inc. may void the authority granted to the user by the FCC to operate this
equipment.
CE NOTICE
QNAP NAS comply with different CE compliance classes. Please refer to the Appendix for
details.

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QNAP TS-251+ Specifications

General IconGeneral
TypeNAS
BuzzerYes
Noise level15.4 dB
Device classHome & Home Office
Share folder512
Backup featuresCloud, USB drive, iSCSI LUN
Browser supportedApple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla Firefox
Security algorithms256-bit AES, FIPS 140-2, HTTPS, SSH
Processor cores4
Processor model-
Processor familyIntel® Celeron®
Processor frequency2 GHz
Fan voltage12 V
AC input voltage100 - 240 V
Power supply locationExternal
Power consumption (sleep)0.57 W
Power consumption (typical)18.09 W
Power consumption (HDD standby)10.56 W
Power supply unit (PSU) capacity60 W
Flash memory512 MB
Memory slots2x SODIMM
Internal memory- GB
Memory clock speed1600 MHz
Internal memory typeDDR3L
Maximum RAM supported8 GB
Wi-FiNo
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, SMSC
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)5 - 95 %
Chassis typeTower
Cooling typeActive
Fan diameter70 mm
Product colorBlack
LED indicatorsHDD, LAN, Power, Status, USB
Number of fans1 fan(s)
Cable lock slot typeKensington
Operating system version4.3
Operating system installedQNAP Turbo System
Mac operating systems supportedMac 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 operating systems supportedWindows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64
RAID levels0, 1, JBOD
Storage drive size- \
Storage drive capacity4000 GB
Supported file systemsFAT32, HFS+, NTFS, exFAT, ext3, ext4
Installed storage drive typeHDD
Storage drive sizes supported2.5, 3.5 \
Supported storage drive typesHDD & SSD
Total installed storage capacity8 TB
Number of storage drives supported2
Supported storage drive interfacesSerial ATA II, Serial ATA III
Cables includedAC, LAN (RJ-45)
Number of screws14
Fiber ports quantity0
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.
Number of simultaneous users4096 user(s)
Weight and Dimensions IconWeight and Dimensions
Depth219 mm
Width102 mm
Height169 mm
Weight1280 g
Package weight2320 g

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