DAS enclosure TerraMaster D4-320 features four SATA bays for 2.5″/3.5″ drives with total capacity up to 120TB and tool-free Push-lock mechanism. USB 3.2 Gen2 Type-C interface delivers transfer speeds up to 10Gbps with read/write performance reaching 1,016/960 MB/s on SSDs. The device supports hot-swapping, operates with Windows/Mac/Linux systems, includes intelligent temperature-controlled 120mm fan with noise below 21dB(A), measures 222x179x154mm, and consumes 33.2W during operation.
About TerraMaster D4-320
The TerraMaster D4-320 functions as a 4-bay USB DAS enclosure designed for direct-attached storage applications. This JBOD device operates as either a standalone storage solution or as an expansion unit for TerraMaster NAS systems running TOS 5.1 or above. The enclosure accommodates both 3.5-inch and 2.5-inch SATA drives, supporting HDDs and SSDs with individual drive capacities reaching up to 30TB and total storage capacity of 120TB.
The device implements USB 3.2 Gen2 protocol through a Type-C interface, delivering data transfer speeds up to 10 Gbps. Performance benchmarks show read speeds reaching 1,016 MB/s and write speeds achieving 960 MB/s when configured with four SSDs. Single SSD configurations deliver 560 MB/s read and 520 MB/s write speeds. The USB Type-C port maintains backward compatibility with USB 3.0, 3.1, and forward compatibility with Thunderbolt 3 and Thunderbolt 4 connections.
Key technical advantages include:
- Tool-free Push-lock drive mechanism enabling quick installation and removal
- Hot-swapping capability for drive replacement without system shutdown
- Intelligent 120mm temperature-controlled fan maintaining noise below 21 dB(A)
- Native plug-and-play functionality across Windows, Mac, and Linux platforms
- Support for multiple file systems including NTFS, APFS, FAT32, EXT4, and exFAT
The internal architecture employs SATA 6.0 Gb/s interface with individual SATA controllers and an integrated USB hub for optimized performance. The device operates in single disk configuration mode without hardware RAID functionality, treating each drive as an independent storage unit. Power consumption measures 33.2W during active operation with a 72W power supply supporting 100-240V AC input.
Physical specifications include dimensions of 222 x 179 x 154 mm with a net weight of 1.9 kg. The enclosure features specialized sound-absorbing panels and vibration damping technology that reduces operational noise by up to 50% compared to previous models. The thermal management system maintains operational stability within a temperature range of 0°C to 40°C, while supporting storage temperatures from -20°C to 60°C. The device includes HDD sleep mode for enhanced power management during idle periods.
The D4-320 ships with comprehensive accessories including the main unit, power adapter, USB A to Type-C cable rated for 10Gb speeds, installation guide, mounting screws, and warranty documentation. Regulatory compliance includes CE, FCC, CCC, and KC certifications with RoHS environmental standards. The manufacturer provides a 2-year warranty covering hardware defects and operational failures.
Specifications
| Specification | Value |
|---|---|
| General Characteristics | |
| Model | D4-320 |
| Brand | TerraMaster |
| Product Category | DAS JBOD Enclosure |
| Number of Drive Bays | 4 |
| Supported Drive Types | 3.5-inch SATA HDD, 2.5-inch SATA HDD, 2.5-inch SATA SSD |
| Maximum Single Drive Capacity | 30 TB |
| Maximum Total Capacity | 120 TB |
| RAID Support | No hardware RAID |
| Disk Configuration Mode | Single Disk (JBOD) |
| Performance | |
| Internal Interface | SATA 6.0 Gb/s |
| External Interface | USB 3.2 Gen 2 Type-C |
| Data Transfer Speed | Up to 10 Gbps |
| Read Speed (4 SSDs) | Up to 1,016 MB/s |
| Write Speed (4 SSDs) | Up to 960 MB/s |
| Read Speed (1 SSD) | 560 MB/s |
| Write Speed (1 SSD) | 520 MB/s |
| Compatibility | |
| Operating Systems | Windows, Mac, Linux |
| File Systems | NTFS, APFS, Mac OS, FAT32, EXT4, exFAT |
| Interface Compatibility | USB 3.0, 3.1, 3.2, Thunderbolt 3, Thunderbolt 4 |
| Cooling System | |
| Fan Size | 120mm x 120mm x 25mm |
| Noise Level (Standby) | Below 21.0 dB(A) |
| Physical Dimensions | |
| Dimensions (H x W x D) | 222 x 179 x 154 mm |
| Net Weight | 1.9 kg |
| Gross Weight | 3.1 kg |
| Material | Plastic |
| Color | Black |
| Power Supply | |
| Power Supply | 72W |
| DC Input | 12V |
| AC Input Voltage | 100-240V AC, 50/60 Hz |
| Power Consumption (Active) | 33.2W |
| Operating Environment | |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -20°C to 60°C |
| Relative Humidity | 5% to 95% RH |
| Certifications | |
| Certifications | CE, FCC, CCC, KC, RoHS |
| Price | |
| Price | $143 |
Official Store TerraMaster
You can purchase TerraMaster D4-320 products at the official online store at competitive prices by reviewing specifications and user reviews, photos and descriptions, along with available discounts and promotions. Our product reviews will help you select and order Terramaster with direct delivery from the manufacturer backed by an official warranty.