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QNAP TS-251B User Manual

QNAP TS-251B
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TS-251B
User Guide
Document Version: 3
23/07/2018

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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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