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QNAP TS-431X3 4-Bay 10GbE High-Speed NAS
QNAP TS-431X3 4-Bay 10GbE High-Speed NAS
QNAP TS-431X3 4-Bay 10GbE High-Speed NAS
QNAP TS-431X3 4-Bay 10GbE High-Speed NAS
QNAP TS-431X3 4-Bay 10GbE High-Speed NAS
QNAP TS-431X3 4-Bay 10GbE High-Speed NAS
QNAP

QNAP TS-431X3 4-Bay 10GbE High-Speed NAS

★★★★★4.0 (43 reviews)
USB 3.2

QNAP TS-431X3 combines 10GbE SFP+ and 2.5GbE connectivity in an affordable 4-bay NAS for growing businesses.

$559.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The QNAP TS-431X3 is a 4-bay NAS designed to bring high-speed networking to small and medium-sized businesses at an accessible price point. Powered by an AnnapurnaLabs AL-314 quad-core 1.7 GHz ARM processor and 4 GB of DDR3L memory (expandable to 8 GB), it offers a balanced platform for file sharing, centralized backup, and light virtualization. The standout feature is its tiered networking: a 10GbE SFP+ port for high-bandwidth workstations or servers, a 2.5GbE port for faster-than-gigabit client connections, and a standard 1GbE port for legacy devices — all usable simultaneously.

The four 3.5-inch SATA bays support drives at both 6 Gb/s and 3 Gb/s speeds, and the diskless configuration lets you choose drives that fit your capacity and budget. Three USB 3.2 Gen 1 ports provide options for external storage expansion, UPS connectivity, or one-touch backup from USB drives. Running QNAP's QTS operating system, the TS-431X3 supports a wide range of applications including comprehensive backup and recovery tools, RAID management, iSCSI and NFS protocols for virtualization environments, and remote access via myQNAPcloud. For businesses outgrowing basic single-gigabit NAS devices but not yet ready for enterprise-class hardware, the TS-431X3 bridges the gap effectively.

Key Features

AnnapurnaLabs AL-314 quad-core 1. 7GHz processor

Single-port 10GbE port (SFP+)

Single-port 2.5GbE port

Single-port 1GbE (RJ45)

3 X USB 3.2 Gen 1 ports.4 GB SODIMM DDR3L Memory ( Max 8GB).4 x 3. 5-inch SATA 6Gb/s, 3Gb/s (Diskless)

Specifications

Brand
QNAP
Model
TS-431X3
Processor
AnnapurnaLabs AL-314 Quad-Core 1.7 GHz
Memory
4 GB DDR3L SODIMM (Max 8 GB)
Drive Bays
4 x 3.5-inch SATA 6Gb/s / 3Gb/s
10GbE Port
1 x SFP+
2.5GbE Port
1 x RJ45
1GbE Port
1 x RJ45
USB Ports
3 x USB 3.2 Gen 1
Drives Included
None (Diskless)

Pros & Cons

👍 Pros

  • Triple-speed networking with 10GbE SFP+, 2.5GbE, and 1GbE ports provides flexible connectivity for mixed network environments
  • Quad-core 1.7 GHz processor handles NAS tasks, backup, and light virtualization workloads effectively
  • Upgradeable memory from 4 GB to 8 GB allows performance scaling as workload demands grow
  • Three USB 3.2 Gen 1 ports enable direct external storage expansion and one-touch backup
  • Cost-effective entry point for businesses that want 10GbE performance without enterprise-tier pricing

👎 Cons

  • ARM-based processor limits the range of supported apps and containers compared to Intel/AMD-based QNAP models
  • Maximum memory ceiling of 8 GB DDR3L constrains heavier multitasking and virtualization workloads
  • Four drive bays limit maximum raw storage capacity compared to 6- or 8-bay alternatives
  • 10GbE connectivity requires an SFP+ transceiver (sold separately) plus compatible network infrastructure
  • No HDMI output, so it cannot be used as a direct-playback media server connected to a display

Frequently Asked Questions

No. The TS-431X3 is sold diskless — it accepts up to four 3.5-inch SATA drives, which you purchase separately to match your capacity and budget requirements.
The SFP+ port provides up to 10 Gbps network throughput, which is essential for fast file transfers, virtualization, and multi-user access. You will need a compatible SFP+ transceiver module and a 10GbE switch or direct-attach cable to use it.
Yes. The TS-431X3 ships with 4 GB of DDR3L memory and supports a maximum of 8 GB, allowing you to add capacity for running more applications or virtual machines simultaneously.
It has three network ports — one 10GbE SFP+, one 2.5GbE RJ45, and one 1GbE RJ45 — which can be used simultaneously for network segmentation or to serve different client speeds.
It supports 3.5-inch SATA drives at both 6 Gb/s and 3 Gb/s speeds. This includes standard hard drives and 3.5-inch SATA SSDs.

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