TerraMaster D4-320 is a powerful external DAS enclosure for expanding storage with 4 SATA drive bays, USB 3.2 Gen 2 Type‑C (10 Gb/s), and a total capacity of up to 88 TB. It offers hot-swap, quiet operation thanks to smart cooling, and easy tool-free drive installation, making it ideal for backups, multimedia, and work projects.
TerraMaster D4-320 is a practical desktop DAS (Direct Attached Storage) enclosure that lets you quickly and conveniently expand your computer’s capacity via USB‑C. It supports 3.5" and 2.5" SATA HDDs as well as 2.5" SATA SSDs, and thanks to the USB 3.2 Gen 2 interface it handles large files, photos, and video smoothly.
The device operates in Single Disk mode (no built‑in RAID) — each drive appears separately in the system. This simplifies data management and allows you to mix drives of different capacities. If you need RAID, you can implement it using software in your operating system.
Main benefits:
- 4× SATA bays and total capacity up to 88 TB (4 × 22 TB)
- USB‑C 10 Gb/s for fast data copying; up to 1016 MB/s with 4 drives installed (depending on configuration)
- Hot Swap for drive replacement without shutting down
- Tool‑free drive installation with Push‑Lock latching
- Quiet operation and stable temperatures thanks to a 120 mm fan with intelligent control
- Automatic drive sleep mode for lower power consumption
- Wide compatibility with Windows and macOS, support for common file systems
Package contents:
- TerraMaster D4-320 enclosure
- Power adapter
- Power cable
- USB‑C to USB‑C cable (10 Gb/s)
- Quick start guide
- Set of mounting screws
- Manufacturer warranty information
Specifications
- Manufacturer
- TerraMaster
- Model
- D4-320
- Type
- DAS enclosure (Direct Attached Storage)
- Number of bays
- 4
- Supported storage media
- 3.5" SATA HDD, 2.5" SATA HDD, 2.5" SATA SSD
- Maximum capacity
- 88 TB (4 × 22 TB)
- Drive operating mode
- Single Disk, no built‑in RAID
- Hot Swap
- Yes
- Interface
- USB 3.2 Gen 2 Type‑C
- Maximum interface bandwidth
- 10 Gb/s
- Maximum read speed
- up to 560 MB/s (1 SSD)
- Maximum write speed
- up to 520 MB/s (1 SSD)
- Maximum transfer speed (with 4 drives)
- up to 1016 MB/s
- Noise level
- 21 dB(A)
- Cooling
- 120 mm fan with intelligent speed control
- Supported file systems
- NTFS, APFS, FAT32, exFAT, EXT4
- Compatible operating systems
- Windows, macOS
- Power consumption
- 72 W
- Dimensions
- 222 × 179 × 154 mm
- Net weight
- 1.9 kg
