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QNAP TS-431KX-2G 4-Bay NAS Enclosure


Available on backorder

  • 4 x 3.5″ / 2.5″ SATA III Drive Bays
  • 1.7 GHz Annapurna Labs AL214 Quad-Core
  • 2GB DDR3 RAM
  • 2 x RJ45 Gigabit Ethernet Ports
  • 1 x 10Gb SFP+ Port
  • 3 x USB 3.1 Gen 1 Ports
  • RAID 0, 1, 5, 6, 10, JBOD, Single
  • Up to 1117 MB/s Sequential Read Speeds
  • Up to 511 MB/s Sequential Write Speeds
  • QTS 5.0.0

QAR 3,083

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CPU1.7 GHz Quad-Core
ProcessorAnnapurna Labs Alpine AL214
Total Installed Memory2 GB DDR3
User-Replaceable Memory1 x 2 GB
Total Memory Slots1 x SO-DIMM
Maximum Memory Capacity8 GB
Flash Memory512 MB


Number of Bays4 x 2.5″/3.5″
I/O2 x RJ45 (Gigabit Ethernet)
1 x SFP+ (10GbE)
3 x USB Type-A (USB 3.1 / USB 3.2 Gen 1 (5 Gb/s))
Compatible Drive InterfaceSATA II, SATA III
Media Card SlotsNone
Form FactorDesktop
RAIDRAID 0, 1, 10, 5, 6, JBOD, Single
Hot-Swap SupportYes
Wake on LANYes


Supported ProtocolsAFP
iSCSI Target256
Max Concurrent Connections400
Max Folders512
Max Groups512
Max User Accounts4096
Max Volume Number128
Max Cameras Supported3000


Installed Operating SystemQTS 5.0.0
Supported File SystemsInternal: EXT4
External: EXT3, EXT4, FAT32, HFS+, NTFS, exFAT
OS CompatibilitymacOS 10.10 or Later
Windows 7 or Later
Windows Server 2008 R2 or Later
Ubuntu 14.4 or Later
CentOS 7 or Later
*As of December, 2021: check with manufacturer for the most up-to-date compatibility
Supported BrowsersChrome, Edge, Firefox, Safari


Encryption256-Bit AES
Security FeaturesLockable Bay Door
VPN Client Connections100


AC Input Power100 to 240 VAC, 50 / 60 Hz
Power SourceAC Adapter
Power Consumption26.7 W (Typical)
11.65 W (Idle)


Operating Temperature32 to 104°F / 0 to 40°C
Operating Humidity5 to 95%
Storage Temperature-4 to 158°F / -20 to 70°C


Status MonitoringLED Indicator
Audible AlarmYes
Cooling1 x 120 mm Fan
Noise Level19.5 dBA
Built-In SpeakersNone
IR SensorNone
Dimensions8.6 x 6.6 x 6.3″ / 21.95 x 16.54 x 16 cm
Weight4.4 lb / 2.0 kg

Enhance your home or small business network’s storage capacity for fast backups, data sharing, surveillance, and more with the QNAP TS-431KX-2G 4-Bay NAS Enclosure. Powered by a 1.7 GHz Annapurna Labs AL214 quad-core processor with 2GB of DDR3 memory, this entry-level network attached storage (NAS) enclosure features four hot-swappable 3.5″ / 2.5″ SATA III drive bays with support for RAID 0, 1, 5, 6, 10, JBOD, and Single configurations. It integrates into your network through its dual RJ45 Gigabit Ethernet ports or its 10Gb SFP+ fiber connector. When configured in four SATA III solid-state drives in RAID 5 mode, the TS-431KX-2G can deliver sequential read speeds of up to 1117 MB/s and 511 MB/s sequential write speeds over the 10GbE connection. With support for Hybrid Backup Sync, snapshots, and 256-bit AES hardware encryption, your data is protected from potential threats and other issues. The TS-431KX-2G uses the QTS 5.0.0 operating system.

Fast Connection
Connecting the high-speed 10Gb SFP+ port to a compatible device helps you to spend less time waiting for large data transfers and backups to complete.

Hybrid Backup Sync
Hybrid Backup Sync (HBS) technology provides comprehensive disaster recovery by automatically backing up and syncing your data across multiple NAS devices, servers, and cloud storage services.

Use snapshots to fully record your system status and data to protect against accidental deletion, malware attacks, and more. QNAP snapshots are block-based and only record modified data, which helps to conserve storage space while reducing backup and recovery times.

Hot-swapping support provides continuous operation by allowing you to remove and replace drives without having to power down the NAS.

Virtual JBOD
With Virtual JBOD (VJBOD) technology, you can quickly expand your storage space by connecting additional NAS systems.

USB 3.1 Gen 1
Three USB 3.1 Gen 1 Type-A ports are available for transferring up to 5 Gb/s with compatible peripherals such as keyboards, mice, webcams, and external storage drives.

Surveillance Solution
The TS-431KX-2G supports over 3000 IP cameras across 16 expandable channels. Two free IP camera channels are included, and the system supports both IP cameras and USB webcams.

The QTS 5.0.0 operating system supports a variety of apps to help back up, organize, and share data across your network.


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