Syba
Syba SY-TDB40178 USB4 40Gbps NVMe M.2 B+M-Key drive enclosure
USB4 40 Gbps aluminium enclosure for M.2 NVMe B+M-Key SSDs up to 22110 size, no power adapter required
- ColorBlack
- AC AdapterNo
- MaterialAluminum alloy
- Thunderbolt 3Yes
- Internal InterfaceM.2 NVME B+M-Key
- USB4 40Gbps bandwidth enables ultra-fast NVMe transfers
- Aluminium alloy body provides passive cooling without a fan
- Supports M.2 NVMe drives 2230 to 22110 with B+M or M-Key
- Bus-powered via USB-C so no separate adapter required
- Works with Thunderbolt 3/4/5 and Windows, macOS, Linux, Android, iOS
USB4 40Gbps NVMe enclosure
The Syba SY-TDB40178 is a USB4 40Gbps enclosure that accepts M.2 NVMe SSDs with B+M-Key connectors. It draws power from the host port and needs no external adapter. The aluminium case provides passive cooling for sustained workloads.
B+M-Key M.2 NVMe only
Only M.2 NVMe drives with B+M-Key or M-Key pinouts fit this enclosure; SATA-based M.2 modules are not supported. Compatible lengths include 2230, 2242, 2260, 2280 and 22110. The internal interface is PCIe NVMe exclusively.
Thunderbolt 3/4/5 host required
Full 40Gbps throughput requires a host port that implements Thunderbolt 3, 4 or 5 alongside USB4. The enclosure works with Windows, macOS, Linux, Unix, Android and iOS. It adds no active cooling, so system airflow must handle drive heat.
Highlights
- USB4 40Gbps bandwidth enables ultra-fast NVMe transfers
- Aluminium alloy body provides passive cooling without a fan
- Supports M.2 NVMe drives 2230 to 22110 with B+M or M-Key
- Bus-powered via USB-C so no separate adapter required
- Works with Thunderbolt 3/4/5 and Windows, macOS, Linux, Android, iOS
Specifications
| Brand | SYBA |
|---|---|
| Model | SY-TDB40178 |
| Color | Black |
| AC Adapter | No |
| Material | Aluminum alloy |
| Thunderbolt 3 | Yes |
| Internal Interface | M.2 NVME B+M-Key |
| Shipping weight | 0.20 kg |
| Package size | 150 × 95 × 38 mm |
Questions about this item
What does the 40 Gbps figure mean for real-world file transfers?
The enclosure connects over USB4 or Thunderbolt 3/4/5 at up to 40 Gbps, so an NVMe drive inside can deliver its full sequential read and write speed instead of being limited by a slower port.
Which interface standard caps the speed and what does it allow?
USB4 Gen 4x4 and Thunderbolt 3/4/5 both cap at 40 Gbps, letting the M.2 NVMe B+M-Key SSD run at PCIe lane speed without a separate power adapter.
What physical M.2 sizes and keys fit inside the aluminium case?
The dock accepts M.2 NVMe drives with M-Key or B+M-Key connectors in 2230, 2242, 2260, 2280 and 22110 lengths; SATA or B-Key-only SSDs are not supported.
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