TerraMaster / DAS / Diskless

D4-320

Four SATA bays on one USB connection. Useful for a computer that manages each disk or its own software storage pool.

4 SATA bays0 NVMe slotsUSB-C 10Gbps

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Manufacturer specifications

Full model: D4-320
RAID: No hardware RAID; independent disks
System: Requires a connected computer
Drive format: 3.5-inch SATA HDD / 2.5-inch SATA SSD
Included storage: Diskless; drives sold separately
SATA drive bays: 4
NVMe slots: 0
Connection: USB-C 10Gbps

Specifications reviewed 2026-09-13. TerraMaster D4-320 manufacturer specifications ↗

Enclosure offers

Storage drives are not included. Verify memory and seller configuration on Amazon.

New$189.99View on Amazon US ↗Checked Sep 13, 2026 20:53 UTC

ASIN B0CTTL9R7Z

Before you buy

The enclosure does not provide RAID; software RAID requires host OS support.
Drives are separate purchases. Confirm the exact model and hardware revision in the manufacturer compatibility list.
Keep an independent backup of irreplaceable files. RAID does not protect against every cause of data loss.

Compare NAS hard drives →

Compare the alternatives

TerraMaster D4-320 vs TerraMaster D6-320 →TerraMaster D4-320 vs TerraMaster D5-310 →

As an Amazon Associate I earn from qualifying purchases. These are diskless enclosures; drives are sold separately. Amazon US only. Prices and availability can change; the price displayed on Amazon at purchase applies. Check the selected seller, condition and exact configuration.