Why does the read and write speed drop below 1000Mb/S

When the tested read speed of the drive is 2600–2800MB/s (close to the interface bandwidth limit). Write speed is drive-limited, affected by its controller chip, cache size and flash memory type.

Is this enclosure compatible with MacBook Pro and Mac mini?

Yes. This NVMe SSD enclosure is fully compatible with MacBook Pro, Mac mini. It is plug and play and does not require any drivers.

Does it really support 40Gbps speed?

Yes. When used with a Thunderbolt port and a compatible NVMe SSD, the enclosure supports up to 40Gbps data transfer speed. Actual speed may vary depending on the SSD and host device.

Does this NVMe enclosure overheat during 4K video editing?

The enclosure has a built-in switchable cooling fan and an aluminium housing, which helps keep the SSD at a stable temperature during heavy tasks like 4K video editing or large file transfers.

On Windows systems, the read speed ranges from 1800–3000MB/s, while the write speed only reaches a few

On Windows (with Thunderbolt driver installed) Disk Management → Right-click drive → Properties → Policies → Enable Better Performance (Read) → Confirm and test read speed.

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M.2 NVMe SSD Enclosure 40Gbps, Compatible with USB 4/3/USB3.2/3.1/3.0/2.0, for M1 M2 Pro/MAX, Support for M.2 SSD Case 2280/2260/2242/2230 B+M M-Key, Built-in Cooling Fan

Product ID: 548727326

Details

Brand
Acasis
Colour
Midnight Blue
Hardware interface
USB
Hardware platform
Windows
Product dimensions
9.9L x 9.9W x

⚡40Gbps ultra-fast transfer

🔗Dual-chip USB4/3.2/3.1/3.0/2.0 compatibility

🧊Built-in cooling fan & aluminum shell

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€ 219.07

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Unlock lightning-fast storage with cool confidence!

DUAL CHIP STABILITY - JHL7440 + RTL9210B chips ensure rock-solid performance and future-proof USB4 compatibility.
BLAZING 40 GBPS SPEEDS - Transfer a 1GB file in just 4 seconds—work at the speed of now.
POCKET SIZED POWERHOUSE - Compact, travel-friendly design fits effortlessly in your bag for on-the-go productivity.
UNIVERSAL PRO COMPATIBILITY - Seamlessly works with M1/M2 Pro/Max Macs, iPad Pro, Windows, macOS, and Linux—your all-in-one storage solution.
NEXT LEVEL THERMAL MANAGEMENT - Stay cool under pressure with a silent, switchable fan and heat-dissipating aluminum casing.

The ACASIS 40Gbps M.2 NVMe SSD Enclosure delivers ultra-high-speed data transfer up to 2805 MB/s with a robust dual-chip design and advanced cooling system. Compatible with a wide range of SSD sizes (2230 to 2280) and USB standards including USB4, it supports up to 8TB capacity and works flawlessly across Mac, Windows, and Linux platforms. Its sleek aluminum body and built-in fan ensure sustained performance, making it the ultimate portable storage upgrade for professionals who demand speed and reliability.

Specifications

ASIN	B0C8CTW8M6
Best Sellers Rank	31,386 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 141 in Enclosures
Box Contents	Thunderbolt Cable
Brand Name	Acasis
Colour	Midnight Blue
Compatible Devices	Mac mini M4, Mac mini M4 Pro
Country of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (432)
Data Transfer Rate	40 Gigabits Per Second
Enclosure Material	Aluminium
Hardware Interface	USB
Hardware Platform	Windows
Item Dimensions L x W x H	9.9L x 9.9W x 1.4H centimetres
Item Weight	0.32 Kilograms
Manufacturer	ACASIS
Manufacturer Part Number	TBU405PROM1
Memory Storage Capacity	8.01 TB
Model Number	TBU405PROM1
Network Connectivity Technology	Thunderbolt, USB
Product Warranty	2
Supported Devices Quantity	1
The Standard Size of the Hard Drive or the Bay the Hard Drive Is Compatible With (in inches)	2.5 Inches
Unit Count	1.0 count

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