QNAP TS-451DeU Buyers Guide

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  • Processor: Intel® Celeron® J4025 dual-core 2.0 GHz processor (burst up to 2.9 GHz)
  • System Memory: 2 GB SO-DIMM DDR4 (1 x 2 GB)
  • Maximum Memory: 8 GB (2 x 4GB)
  • 2.5 Gigabit Ethernet Port: 2
  • Graphic Processors: Intel® HD Graphics 600
  • Drive Compatibility: 3.5-inch SATA hard disk drives, 2.5-inch SATA hard disk drives, 2.5-inch SATA solid state drives
  • M.2 SSD: 2 x M.2 2280 SATA 6Gb/s slots

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Product Overview

The TS-451DeU is QNAP’s all-new rackmount 4-bay NAS. It features a compact design that allows you to install it in small spaces such as media cabinets. This modern NAS is feature-rich and comes with an Intel Celeron dual-core processor blended with 2.5GbE connectivity. This allows you to tackle daily tasks such as file restore and backup. Besides, the NAS supports different business media and business applications such as video streaming, transcoding, snapshot protection, and file-sharing.

TS-451DeU Product Specifications

  • Intel Celeron dual-core processor
  • 2GB DDR4 memory
  • 2X 2280 SATA 6Gb/s SSD Slots
  • Dual USB 3.2 Ports
  • 2X 2.5GbE RJ45 ports
  • Intel embedded graphics 600
  • 4-Bay SATA Storage
  • Allows hardware decoding and transcoding
  • 3-Year Limited Warranty

The TS-451DeU All-in-One NAS

This rackmount NAS is the most formidable product in QNAP’s impressive TS-x51D range. The TS-451DeU runs on an Intel Celeron dual-core 2GHz processor that turbos to 2.9GHz, and features 2GB RAM (expandable to 8GB). It features a compact 12-inch deep design, which makes it perfect for network racks or A/V racks where a typical 29-inch-deep server can’t fit.
TS-451DeU compared to TS-451

The TS-451DeU NAS gives you enough space for four swappable 3.5 in hard drives as well as two SATA 6Gb/s SSD slots and dual 2.5GbE ports. When running applications that require additional storage space, you can expand the NAS device’s 2GB DDR4 memory to 8GB via its SODIMM slots. Given that this is an entry-level NAS, it doesn’t offer support for NVMe drives. The 2.5GbE ports are a welcome addition since they give you 5Gbps when bonded, thus allowing for high-speed network storage.

M.2 SSD slots in the TS-451DeU

Upgrade Your Network

TS-451DeU NAS is a budget-friendly and comprehensive networking and storage solution that allows you to future-proof your system for high-speed connections. The new-generation Wi-Fi 6 trends have increased bandwidth demands for both wireless and wired connections. With dual 2.5GbE LAN ports, the TS-451DeU NAS enables you to conveniently upgrade your network speed from 1GB to 2.5GB using the existing CAT5e cables. Moreover, the ports support port trunking, thus allowing you to enhance your network speed to 5Gbps.

TS-451DeU network connectivity

The Ultimate Backup/Restore Solution

The TS-451DeU is an ideal backup and disaster recovery NAS device since it’s designed to simplify typical data backup jobs with high productivity. You can leverage the QNAP NetBak Replicator to back up files from your Windows computers. Conversely, Apple’s Time Machine is also supported for undertaking backup tasks for Mac computers.

This NAS device is also an ideal tool for backing up your virtual machines, thanks to its high performance, impressive storage capacity, snapshot support, and integrated virtualization solutions. The TS-451DeU is among the few NAS devices that have hybrid Backup Sync (HBS) for consolidating your backup/restoration and synchronization functions. This feature allows you to conveniently transfer data from the device to your cloud, remote, and local storage spaces.

The Go-To Multimedia Server

If you run demanding multimedia applications, the TS-451DeU should be your go-to NAS. You can use it for demanding transcoding and video streaming applications. To do this, you simply need to install the Plex Server from the QTS App Center. After that, you’ll stream media files from this NAS device to mobile gadgets and other media streaming devices such as Amazon Fire TV. The TS-451DeU comes with advanced Intel Graphics, which supports not only real-time transcoding and hardware decoding but also the conversion of videos to different file formats.

TS-451DeU Applications and Use Case

The TS-451DeU is ideal for both home and enterprise-level users. Its impressive multimedia properties make it suitable for multi-zone management applications such as media streaming. It can also be suitable for your video surveillance system. The NAS has an MRSP of $730.

Additional information

Specification: QNAP TS-451DeU Buyers Guide




Form Factor

1U Rackmount


Intel® Celeron® J4025 dual-core 2.0 GHz processor

Installed Memory (RAM)


Maximum RAM

8 GB (2 x 4GB)


4GB (Dual boot OS protection)

M.2 Compatability


Internal Cache Port


Drive Bays

4 Bay

Compatible Drive Types

2.5" SATA HDD, 2.5" SATA SSD, 3.5" SATA HDD

Power Supply

100W PSU, 100-240V

Noise Level

21.6 db(A)

Product Warranty

3 Year

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