---
product_id: 637969193
title: "D4-320 External Hard Drive Enclosure 4-Bay (Diskless)"
brand: "terramaster"
price: "€ 379.86"
currency: EUR
in_stock: true
reviews_count: 4
category: "Terramaster"
url: https://www.desertcart.at/products/637969193-d4-320-external-hard-drive-enclosure-4-bay-diskless
store_origin: AT
region: Austria
---

# 10Gbps USB 3.2 Gen2 speed Supports up to 120TB total storage Hot-swappable drives, zero downtime D4-320 External Hard Drive Enclosure 4-Bay (Diskless)

**Brand:** terramaster
**Price:** € 379.86
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your storage game with speed, scale, and silent power.

## Quick Answers

- **What is this?** D4-320 External Hard Drive Enclosure 4-Bay (Diskless) by terramaster
- **How much does it cost?** € 379.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/637969193-d4-320-external-hard-drive-enclosure-4-bay-diskless)

## Best For

- terramaster enthusiasts

## Why This Product

- Trusted terramaster brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Hot-Swap:** Replace or upgrade drives on the fly without powering down—maximize uptime and workflow efficiency.
- • **Blazing-Fast Transfers:** Experience lightning 10Gbps USB 3.2 Gen2 speeds for seamless multitasking and massive file handling.
- • **Whisper-Quiet Operation:** Intelligent cooling and sound-absorbing design cut noise by 50%, keeping your workspace distraction-free.
- • **Massive Storage Powerhouse:** Scale up to 120TB with 4 bays supporting 3.5" & 2.5" SATA HDDs/SSDs—future-proof your data needs.
- • **Tool-Free, Secure Drive Installation:** Innovative Push-lock trays let you install drives in seconds, no tools required, no risk of disconnection.

## Overview

The TERRAMASTER D4-320 is a sleek, 4-bay external hard drive enclosure delivering ultra-fast 10Gbps USB 3.2 Gen2 connectivity. Supporting up to 120TB total capacity with hot-swappable, tool-free drive trays, it offers seamless compatibility across Mac, Windows, and Linux. Its intelligent cooling and noise reduction features ensure quiet, efficient operation, making it the ideal storage expansion for professionals demanding speed, flexibility, and reliability.

## Description

TERRAMASTER D4-320 External Hard Drive Enclosure 4-Bay (Diskless) | USB 3.2 Gen2 10Gbps, Type-C USB Storage, Hot Swappable Plug and Play (Diskless) : desertcart.ae: Computers

Review: Pricy, but works as advertised without issue. - Been running 24/7 for several months now. No issue whatsoever, works exactly as advertised. Somewhat pricy for what it does.
Review: Wish I could return, sold without full disclosure - At least on Mac, there is no full real SMART pass-through. The windows based software update sent by support to update the firmware of SATA bridges (one by one) is not specific to my model so as to support SMART. The support experience was unacceptable in several ways. When scanning the QR sticker that says “24x7,” it leads to a 404 page. Underneath the sticker, it states that they respond within 24 hours, so “24x7” is misleading. Such promises are not trustworthy. I appreciate the compact design, the tool-less installation, and the fan, but I cannot trust the dynamic fan speed when that device doesn’t seem to get firmware right. This design is more suited for a home office setting and might not be as reliable as professional-grade and optimized for being always on. If you’re thinking about buying a SMART-compatible device, I’d suggest choosing one that’s been thoroughly tested, reliable, and has a chipset that’s been trusted in the past. While it might have a bit more fan noise but possibly lower NVH with a screw-on installation - and it’s a better way to keep things safe and reliable.

## Features

- High-Speed Data Transmission: The D4-320 hard drive enclosure (a DAS, NOT a NAS) utilizes the USB 3.2 Gen2 protocol, achieving high-speed data transmission of up to 10Gbps. When equipped with four hard drives, the actual read/write speed can reach up to 1,016 MB/s (combined read/write with four SATA III HDDs of 8TB each). With just one SSD installed, the read speed effortlessly reaches 510 MB/s (SATA III 1TB SSD). The D4-320 supports a single HDD up to 30TB, with a total capacity of 120TB, and is compatible with various hard drives, including 3.5-inch SATA hard drives, 2.5-inch SATA hard drives, and 2.5-inch SATA SSDs
- Plug-and-Play Compatibility: The D4-320 USB storage supports 4 individual disks (NO RAID function), and is plug-and-play, eliminating the need for drivers. It is highly compatible with MAC, Windows, and Linux operating systems. The USB Type-C interface supports various computer interfaces, including USB 3.0, USB 3.1, USB 3.2, Thunderbolt 3, and Thunderbolt 4
- Hot Swappable Convenience: The D4-320 HDD enclosure supports hot swapping, allowing users to replace hard disks without powering off the device. This feature enhances convenience and efficiency in data transfer processes
- Tool-Free Hard Drive Management: Featuring a tool-free hard drive tray design, the D4-320 external HDD enclosure enables easy installation and removal of hard drives without requiring additional tools. Furthermore, the D4-320 incorporates TerraMaster's unique Push-lock design, automatically securing the hard drive tray upon insertion, preventing the hard drive from falling out or disconnecting
- Efficient Heat Dissipation and Quieter Operation: The D4-320 direct attached storage incorporates an intelligent temperature-controlled fan for optimal heat dissipation. Additionally, specialized sound-absorbing panels and vibration damping measures contribute to a quieter operation, with noise levels reduced by up to 50% compared to the previous generation. In standby mode, the noise level drops below 21 dB(A), creating a remarkably quiet user environment

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D6RBY9KS |
| Brand | TERRAMASTER |
| Built-In Media | D1 SSD Plus |
| Color | Black |
| Colour | Black |
| Compatible Devices | Desktop, Laptop |
| Connectivity Technology | USB |
| Country of Origin | China |
| Customer Reviews | 3.9 out of 5 stars 10 Reviews |
| Data Transfer Rate | 10 Gigabits Per Second |
| Enclosure Material | Plastic |
| Hard Disk Form Factor | 3.5 Inches |
| Hardware Interface | USB 3.2 Gen 2 |
| Hardware Platform | Linux, Mac, Windows |
| Hardware interface | USB 3.2 Gen 2 |
| Hardware platform | Linux, Mac, Windows |
| Item Highlight | USB 3.2 Gen2 10Gbps, Type-C USB Storage, Hot Swappable Plug and Play (Diskless) |
| Manufacturer | TERRAMASTER |
| Material | Plastic |
| Memory Storage Capacity | 1 TB |
| Memory storage capacity | 1 TB |
| Mfr Part Number | 320 |
| Model Number | D4-320 |
| Number of Items | 1 |
| Supported Devices Quantity | 4 |
| Unit Count | 1 Count |
| Warranty Description | 2 |

## Product Details

- **Brand:** TERRAMASTER
- **Colour:** Black
- **Hardware interface:** USB 3.2 Gen 2
- **Hardware platform:** Linux, Mac, Windows
- **Item weight:** 1.9 Kilograms

## Images

![D4-320 External Hard Drive Enclosure 4-Bay (Diskless) - Image 1](https://m.media-amazon.com/images/I/51+zegV81qL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Pricy, but works as advertised without issue.
*by A***R on 25 January 2025*

Been running 24/7 for several months now. No issue whatsoever, works exactly as advertised. Somewhat pricy for what it does.

### ⭐⭐⭐ Wish I could return, sold without full disclosure
*by H***M on 5 February 2026*

At least on Mac, there is no full real SMART pass-through. The windows based software update sent by support to update the firmware of SATA bridges (one by one) is not specific to my model so as to support SMART. The support experience was unacceptable in several ways. When scanning the QR sticker that says “24x7,” it leads to a 404 page. Underneath the sticker, it states that they respond within 24 hours, so “24x7” is misleading. Such promises are not trustworthy. I appreciate the compact design, the tool-less installation, and the fan, but I cannot trust the dynamic fan speed when that device doesn’t seem to get firmware right. This design is more suited for a home office setting and might not be as reliable as professional-grade and optimized for being always on. If you’re thinking about buying a SMART-compatible device, I’d suggest choosing one that’s been thoroughly tested, reliable, and has a chipset that’s been trusted in the past. While it might have a bit more fan noise but possibly lower NVH with a screw-on installation - and it’s a better way to keep things safe and reliable.

### ⭐⭐⭐⭐ It works, but 4th bay is limited to around 50MB/s
*by M***M on 22 June 2025*

Packaging: Good Build Quality: It's plastic. Cable Quality: The provided USB C cable is sturdier than the usual cables you usually use. It doesn't disconnect at the slightest movement. Product in use: I've been using it for at least 6 months now. It has been stable, except for the fact that the one of the bays is limited to a transfer speed of 50MB/s . I tried the same drive in another bay, and it was able to have transfer speeds of at least 90MB/s. Noise: Get helium filled drives & hope for the best. There is no sound dampener in this DAS.

## Frequently Bought Together

- TERRAMASTER D4-320 External Hard Drive Enclosure - 4bay USB 3.2 Gen2 10Gbps Type-C USB Storage Hot Swappable Plug and Play (Diskless)
- Seagate Enterprise Capacity v7 ST12000NM0127 - Hard Drive - 12 TB - Internal - 3.5 Inch - SATA 6Gb/s - 7200 RPM - 256MB Cache
- Seagate Enterprise Capacity v6 10TB Internal Hard Drive ST10000NM0046 SATA 3.5" HDD 256MB Cache

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-10-22*