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Silver rectangular Thunderbolt enclosure with two NVMe drive bays visible

Acasis

Acasis TBU405ProMax 40Gbps 2-bay NVMe drive enclosure

SKU CH-7PVF-MSRT8 MPN TBU405ProMax

Houses two NVMe drives with software RAID 0/1, reaching 2800 MB/s via Thunderbolt 40Gbps and driving an 8K 60 Hz display

  • 40 Gbps peak throughput via Thunderbolt
  • 2800 MB/s measured RAID 0 speed
  • Dual independent NVMe slots up to 16 TB total
  • JHL7440 controller for simultaneous multi-function use
  • Certified for Windows and macOS compatibility

Dual NVMe enclosure for Thunderbolt hosts

The Acasis TBU405ProMax accepts two M.2 NVMe solid-state drives and connects through a Thunderbolt 4 or Thunderbolt 3 port. It is aimed at video editors, photographers and developers who need fast external storage without opening their computer.

40 Gbps Thunderbolt bandwidth with software RAID

A JHL7440 controller provides up to 40 Gbps of aggregate throughput. Software RAID 0 can reach 2800 MB/s while RAID 1 mirrors data for redundancy; each drive alone delivers about 1500 MB/s. The enclosure only works with Thunderbolt 5, Thunderbolt 4, Thunderbolt 3 or USB4 ports.

Suits users with Thunderbolt-equipped systems

Buyers whose machines lack Thunderbolt or USB4 cannot use this enclosure. It also does not support hot-swapping, so drives must not be inserted or removed while the unit is powered on.

Highlights

  • 40 Gbps peak throughput via Thunderbolt
  • 2800 MB/s measured RAID 0 speed
  • Dual independent NVMe slots up to 16 TB total
  • JHL7440 controller for simultaneous multi-function use
  • Certified for Windows and macOS compatibility

Specifications

BrandACASIS

Questions about this item

What does the 40 Gbps headline speed mean for real-world file transfers?

With a RAID 0 setup the enclosure can reach 2800 MB/s, while each SSD on its own transfers at about 1500 MB/s; actual throughput depends on the SSDs installed and the host system.

Which Thunderbolt or USB4 ports can use the full 40 Gbps bandwidth?

The enclosure is only compatible with Thunderbolt 5, Thunderbolt 4, Thunderbolt 3 and USB4 ports; it will not operate at the rated speed on slower USB-C connections.

What physical SSD sizes and capacities does the two-bay chassis accept?

Each bay takes an M.2 NVMe drive up to 8 TB, so the total capacity can reach 16 TB when both slots are populated in RAID 0.

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