Acasis TB406Pro 40Gbps USB4 M.2 NVMe SSD Enclosure with Aluminum Fin Cooling

The Acasis TB406Pro is a 40Gbps USB4 M.2 NVMe SSD enclosure built around an upgraded aluminum alloy shell with a deep-fin passive cooling design. Powered by the Intel JHL7440 controller, it delivers genuine 40Gbps transfer speeds with completely silent, fanless operation, ideal for video editors, musicians, and anyone who needs fast external storage without the noise.

Key Features

• 40Gbps USB4 high-speed performance via the certified Intel JHL7440 controller
• Supports Thunderbolt 5, Thunderbolt 4, Thunderbolt 3 and USB4, backward compatible with USB 3.2/3.1/3.0
• Tested read/write speeds up to 2805/2734 MB/s (with a Samsung 980 Pro SSD)
• Completely fanless design: zero noise, no vibration, no fan failure risk
• Pro-grade triple aluminum cooling with Opti Thermal Silicone Pad and 1cm deep-fin design
• Shock-resistant reinforced aluminum structure with dual-chip solution for stable, reliable connections
• 3-second tool-free installation, no screws or screwdriver needed
• Supports M.2 NVMe SSDs up to 8TB
• Ultra-portable size at 14.5 x 3.6 x 10cm
• Warranty: 1-year

Package Includes

• 1 x Acasis TB406Pro M.2 NVMe SSD Enclosure
• 1 x 40Gbps USB-C to USB-C cable
• User manual

Does this enclosure include an SSD?

No, this is a diskless enclosure. You'll need to fit your own M.2 NVMe SSD (not SATA), up to 8TB capacity.

Do I need any tools to install my SSD?

No. The TB406Pro uses a tool-free, 3-second installation design, no screws or screwdriver required.

Will I get the full 2805 MB/s speed with any SSD?

The 2805/2734 MB/s figures were tested using a Samsung 980 Pro. Actual speed depends on the specific SSD you install, your computer's own USB4/Thunderbolt port, cable, and system performance.

Is it compatible with Thunderbolt 3 and 4 Macs and PCs?

Yes. The enclosure supports Thunderbolt 5, Thunderbolt 4, Thunderbolt 3 and USB4 hosts, with backward compatibility down to USB 3.2/3.1/3.0.

Will a thick SSD with a factory heatsink fit inside?

Some SSDs with tall integrated heatsinks may not fit inside the enclosure. Acasis reserves the right to replace or upgrade internal components; check your drive's heatsink height against the enclosure's internal clearance before fitting.

Specifications

Model	TB406Pro
Controller	Intel JHL7440
Interface	USB4 (40Gbps), Thunderbolt 5/4/3, backward compatible USB 3.2/3.1/3.0
Tested Speed	Up to 2805 MB/s write, 2734 MB/s read (with Samsung 980 Pro)
Drive Support	M.2 NVMe PCIe SSD, M-Key and M&B-Key, up to 8TB
Form Factors	M.2 2230 / 2242 / 2260 / 2280
Cooling	Fanless passive aluminum fin cooling, 0dB silent operation
Build	Upgraded aluminum alloy, double-thickness structure
Installation	Tool-free, 3-second setup
Dimensions	14.5 x 3.6 x 10cm
OS Support	macOS, Windows, Linux

Note: actual transfer speeds will depend on the specific SSD installed, your computer's own USB4/Thunderbolt port, cable, and overall system performance.

Compatibility

Interface Protocols	USB4 (40Gbps), Thunderbolt 5, Thunderbolt 4, Thunderbolt 3, backward compatible with USB 3.2/3.1/3.0
Mac	MacBook Pro/Air/Neo, Mac mini M4, and other Thunderbolt/USB4-equipped Macs
Windows	Dell XPS and other Thunderbolt/USB4-equipped Windows laptops and desktops
Drives	M.2 NVMe PCIe SSD, M-Key and M&B-Key, 2230/2242/2260/2280, up to 8TB
Not Supported	M.2 SATA SSDs