Name: USB4 40Gbps M.2 NVMe SSD Enclosure – Thunderbolt 3/4/5 Compatible – PCIe Gen4 x4 – Fanless Aluminium
Brand: IOcrest
SKU: AA24M11
Availability: InStock

USB4 40Gbps M.2 NVMe SSD Enclosure – Thunderbolt 3/4/5 Compatible – PCIe Gen4 x4 – Fanless Aluminium

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Turn any M.2 NVMe SSD into a blazing-fast 40Gbps external drive. The Lekuo AA24M11 connects via USB4 or Thunderbolt 3/4/5, delivering read speeds up to 3,819 MB/s — faster than most internal SATA SSDs. Fanless aluminium design runs cool and silent. Plug-and-play on Mac, works with Windows, Linux, and Android. Supports all M.2 sizes from 2230 to 2280.

Description

USB4 NVMe Enclosure — 40Gbps. Fanless. Compact.

ASMedia ASM2464PD · PCIe Gen4 x4 · Thunderbolt 3/4/5 & USB4 · Mac Plug-and-Play

Why 40Gbps Changes Everything

Most external NVMe enclosures are limited to 10Gbps (USB 3.2 Gen 2) — that’s a ceiling of about 1,000 MB/s, regardless of how fast your SSD is. A budget 10Gbps enclosure will bottleneck even a mid-range NVMe drive.

The AA24M11 connects at 40Gbps via USB4, unlocking real-world speeds of 3,800+ MB/s read and 3,100+ MB/s write. That’s nearly 4× faster than a 10Gbps enclosure — and faster than most internal SATA SSDs.

Interface	Max Bandwidth	Real-World Speed
USB 3.2 Gen 2 (10Gbps)	10 Gbps	~1,000 MB/s
USB 3.2 Gen 2×2 (20Gbps)	20 Gbps	~1,800 MB/s
USB4 / TB3/4/5 (40Gbps) ← This enclosure	40 Gbps	~3,800 MB/s

Key Features

⚡ 40Gbps USB4

ASMedia ASM2464PD controller — the same chip used in premium enclosures from UGREEN and Sabrent. Read speeds up to 3,819 MB/s with a PCIe Gen4 SSD.

🌡️ Fanless Aluminium

Full metal housing acts as a passive heatsink. Zero noise, zero moving parts. Independent testing showed it outperformed fan-cooled competitors thanks to its thermal design.

🍎 Mac Plug-and-Play

Works instantly on macOS — no drivers needed. Also supports Windows, Linux, and Android with plug-and-play or simple driver install.

🔌 Universal Thunderbolt

Compatible with USB4, Thunderbolt 5, Thunderbolt 4, and Thunderbolt 3. Backward compatible with USB 3.2/3.1/3.0 at reduced speeds.

💾 All M.2 Sizes

Fits 2230, 2242, 2260, and 2280 M.2 NVMe SSDs. M Key and B+M Key supported. Up to 8TB capacity.

🛡️ Data Protection

S.M.A.R.T. drive monitoring, NVMe error reporting & recovery, UASP acceleration, hot-plug support, and NVMe power management.

Perfect For

🎬 Video Editors & Content Creators

Edit 4K/8K projects directly from the enclosure. At 3,800 MB/s, large video files load instantly. Perfect for on-set workflows with a MacBook Pro.

🖥️ Mac Mini M4 Expansion

The Mac Mini M4 has limited internal storage. Add fast, affordable NVMe storage via USB4 — it’s practically as fast as internal.

⚡ Fast Backups & Migration

Transfer 1TB in under 5 minutes. Clone drives, migrate systems, or create Time Machine backups at full NVMe speed.

🎮 Portable Gaming Storage

Store your Steam/game library on an external NVMe and take it between machines. Load times rival internal SSDs.

Technical Specifications

Model	AA24M11
Controller Chipset	ASMedia ASM2464PD
Host Interface	USB4 (USB-C connector)
Host Compatibility	USB4 / Thunderbolt 5 / 4 / 3 · Backwards: USB 3.2 / 3.1 / 3.0
PCIe Interface	PCIe Gen4 x4
Max Transfer Speed	40 Gbps (read up to 3,819 MB/s)
M.2 Slot	M Key & B+M Key — NVMe PCIe only (not SATA)
Supported M.2 Sizes	2230 / 2242 / 2260 / 2280
Max Capacity	8TB
Cooling	Fanless — full aluminium passive heatsink
Protocols	NVMe 1.4c · BOT & UAS · USB PD 3.1 · S.M.A.R.T. · UASP · TRIM
Dimensions	115.5 × 58.5 × 15 mm
OS Compatibility	macOS (plug-and-play) · Windows · Linux · Android
Power	Bus powered (via USB-C)

⚠️ Important Compatibility Notes

NVMe only — does NOT support M.2 SATA SSDs. Your SSD must be PCIe NVMe (M Key or B+M Key).
40Gbps requires USB4 or Thunderbolt 3/4/5. The enclosure is backward compatible with USB 3.2/3.1/3.0 but speeds will be capped to the port’s maximum (e.g. ~1,000 MB/s on USB 3.2 Gen 2).
SSDs with heatsinks won’t fit — remove any aftermarket or factory heatsink before installation.