published on Monday, June 23, 2025, at 10:48 AM EDT
TerraMaster is revolutionizing external storage with its new D4 SSD, a sleek and high-speed Direct Attached Storage (DAS) solution aimed at creators, gamers, and advanced users. Unlike the usual NAS (Network Attached Storage) systems they offer, the D4 connects straight to your computer, providing exceptional speeds without the hassle of network configurations.
Fast, Versatile, and Prepared for the Future
The D4 SSD is a sturdy enclosure that can accommodate up to four M.2 2280 SSDs with PCIe support, allowing for a total storage capacity of 32TB. TerraMaster asserts that utilizing four high-speed SSDs—such as the Samsung 990 Pro drives in RAID 0—can yield impressive transfer rates of up to 3,257 MB/s for reading and 3,192 MB/s for writing. Even one SSD can reach speeds of 1,600 MB/s, which is still quite remarkable.
Designed to support various workflows, the D4 SSD is especially beneficial for:
- Content Creators & Filmmakers: Seamlessly handle 4K and 8K editing tasks and extensive post-production work.
- Mac Mini Power Users: Utilize it as an external boot drive or massive media repository.
- Gamers: Experience smooth gameplay with minimal lag.
- Mobile Professionals: Compact and portable for carrying professional-grade storage on-the-go.
Connection and Compatibility
The D4 connects through USB 4.0, providing a bandwidth of up to 40Gbps if compatible with your system. It works with both Windows and macOS, and includes built-in backup options:
- Windows users can utilize TPC Backupper.
- macOS users can access Time Machine.
- Mobile users can also use the TDAS companion app (available for iOS and Android) for on-the-go photo and video backups.
Intelligent Cooling and Travel-Friendly Design
Its compact dimensions of 5.43 x 2.36 x 5.51 inches make it easy to stow in a backpack. TerraMaster has incorporated effective cooling solutions in the D4, featuring a top-bottom convection design along with a smart temperature-controlled fan and four temperature sensors that maintain optimal conditions even during heavy use. Plus, it operates quietly at just 19dB when not in use.
In terms of power, the D4 accepts a 12–20V input, allowing it to be powered by your laptop or monitor adapter, so you won’t need to carry an extra power brick while traveling.
Cost and Availability
The TerraMaster D4 SSD enclosure is currently available for $299 directly from TerraMaster or through Amazon. Note that SSDs are not included, but if you have some spare M.2 drives, this is a straightforward way to create a high-speed, portable storage device.
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