Holiday Shipping Details & Extended Holiday Returns 
Up to 80TB capacity with up to 410MB/s sequential read speed
- The D4-300 is desktop storage with massive capacity ideal for storing photos, videos, documents and music. Super-fast performance with up to 410MB/s sequential read speeds and up to 80TB capacity.
Cross-Platform Compatibility for Data Backup
- Use D4-300 to easily backup computer files, compatible with Windows, Mac, and Linux machines. No drivers needed!
The D4-300 is NOT a NAS, it is a DAS and does NOT support RAID.
- Powerful hardware with the latest USB3.1(Gen1) Type C connector.
- Equipped with the latest USB Type-C interface, running USB 3.1 Gen 1 protocol. Testing with Samsung 850 evo 250GB SSD, the actual data transmission speed is up to 369.5MB/s(write) and 417.8MB/s(read).
- All Aluminum-alloy shell and a low-noise fan.
The D4-300 is NOT a NAS, it is a DAS and does NOT support RAID.
Expand the capacity of your NAS
- The D4-300 can quickly add storage space to your NAS. It can be used as an external hardware RAID device for TerraMaster NAS. The D4-300 features USB3.1 connection and supports SSD/HDD drives for high-speed data access and massive capacity.
The D4-300 is NOT a NAS, it is a DAS and does NOT support RAID.
Better Protection
The D4-300 features an intelligent temperature control system and incorporates a low noise fan. The fan speed is automatically adjusted with the temperature of the hard drive to ensure that your hard drive remains at the optimal working temperature.
The D4-300 is NOT a NAS, it is a DAS and does NOT support RAID.
USB 3.1 Type-C High-speed Interface
- Relying on the USB 3.1 Gen 1 super speed protocol, the D4-300's transmission speeds can reach up to 410MB/s (Testing with Samsung 850 evo 250GB SSD).
- The D4-300 adopts the latest USB Type-C interface,Includes a Type C to Type-A cable.
Multi-Drive Compatibility
- Compatible with diverse 3.5-inch SATA hard drive brands and models, as well as with 2.5-inch SATA hard drives and SSDs. Equipped with 4 drive slots, supports a drive capacity of up to 18TB, and a total storage capacity of up to 80TB (Users need to purchase their own hard drives).
- With exclusive energy-saving technology, the D4-300 automatically enters sleep mode, along with your computer, to save energy and extend the life of your drives.
Better Protection
- The D4-300 features an intelligent temperature control system and incorporates a low noise fan.
- The fan speed is automatically adjusted with the temperature of the hard drive to ensure that your hard drive remains at the optimal working temperature.
Brand new replacement for 2 years.
- Brand new replacement for 2 years.
- Quick service in 24 hours!
| Products | |||||
|---|---|---|---|---|---|
| Drive Bays | 2 | 4 | 5 | 5 | 6 |
| Interface | USB3.1 Gen1 Type C (5Gbps) | USB3.1 Gen1 Type C (5Gbps) | USB3.1 Gen1 Type C (5Gbps) | USB3.1 Gen1 Type C (5Gbps) | USB3.2 10Gpbs Type C |
| Max. number of HDDs/SSDs | 2 x 2.5" or 3.5" SATA 6Gb/s | 4 x 2.5" or 3.5" SATA 6Gb/s | 5 x 2.5" or 3.5" SATA 6Gb/s | 5 x 2.5" or 3.5" SATA 6Gb/s | 6 x 2.5" or 3.5" SATA 6Gb/s |
| Max. Storage | 40TB (20TB x 2) | 80TB (20TB x 4) | 100TB (20TB x 5) | 100TB (20TB x 5) | 120TB (20TB x 6) |
| Reading Speed (max.) | 410MB/sec (tested by 2 SSD, in raid 0, Windows OS) | 420MB/sec (tested by 4 SSD, in SingleDisk) | 410MB/sec (tested by 2 SSD, in raid 0, Windows OS) | 210MB/sec (tested by 5 SSD, in raid 0, Windows OS) | 1030MB/s (6 SSD, Single Disk) |
| Writing Speed (max.) | 400MB/sec (tested by 2 SSD, in raid 0, Windows OS) | 390MB/sec (tested by 4 SSD, in SingleDisk) | 400MB/sec (tested by 2 SSD, in raid 0, Windows OS) | 190MB/sec (tested by 5 SSD, in raid 0, Windows OS) | 1005MB/s (6 SSD, Single Disk) |
| Hardware RAID | YES | NO | YES | YES | NO |
| RAID Mode | RAID 0, 1, JBOD, Single | NO | RAID 0, 1, Single | RAID 0, RAID 1, RAID 5, RAID 10, CLONE, JBOD, and Single Disk | NO |
| RAID Features | RAID 0, 1, JBOD, Single for HDD1 & HDD2 | Only individual disk | HDD1 & HDD2 can be set as RAID 0, 1, Single; HDD3-5 can be individual disks | RAID 0, RAID 1, RAID 5, RAID 10, CLONE, JBOD, and Single Disk | NO RAID, only Individual disks |
| RAID Auto-rebuilding | RAID1 | NO | RAID1 | RAID1, RAID5, RAID10 | NO RAID, only Individual disks |
