JEYI 40Gbps USB 4.0 M.2 NVMe SSD Enclosure User Manual

1. Introduction

The JEYI 40Gbps USB 4.0 M.2 NVMe SSD Enclosure transforms your M.2 NVMe SSD into a compact, portable, and high-speed external storage solution. Featuring a USB4.0 Type-C output interface, it supports a maximum transmission speed of up to 40Gbps. Equipped with the advanced ASM2464 chip, it offers broad compatibility with Thunderbolt 3/4 and supports both PCIe and USB Dual Tunnels. This enclosure is designed for efficient heat dissipation and robust durability, making it ideal for demanding data transfer tasks.

2. Package Contents

Please verify that all items are present in your package. Contents may vary slightly depending on the specific model (TB-2464, TB-2464 Pro, TB-2464 Fan).

• USB4.0 M.2 NVMe Enclosure
• Thunderbolt 4/3 Cable
• Thermal Pads
• Screwdriver
• DIY Label (for TB-2464 Fan and TB-2464 Pro models)
• Keychain Holder (for TB-2464 Fan and TB-2464 Pro models)
• Storage Bag (for TB-2464 Fan model)

Image: Package Contents (TB-2464 Fan)

Image: Package Contents (TB-2464 Pro)

Image: Package Contents (TB-2464)

3. Specifications

Image: 3 Versions Available - Comparison Table

ASM2464 Universal Serial Bus Features:

• Support up to USB4/Thunderbolt Gen3 x2 with USB 3.2 and USB 2.0 (backward compatibility).
• Support BOT and UAS Protocol.
• Support USB Hot Plug.
• Support Spread Spectrum Clock Control.
• Support UNMAP Command Set.
• Compliant with Universal Serial Bus 4 (USB4 ®) Specification Rev. 1.0 (including Interoperability with Thunderbolt™ 3 (TBT3) Systems).
• Compliant with Universal Serial Bus Type-C Cable and Connector Specification Revision 2.1.
• Compliant with Universal Serial Bus Power Delivery Specification Revision 3.1 Version 1.3.
• Support up to PCI Express Gen4 x4.
• Support PCI Express NVMe SSD.
• Compliant with PCI Express Base Specification Rev. 4.0.
• Compliant with PCIe M.2 Specification Rev. 1.1.
• Support NVMe Power Management.
• Support NVMe: SCSI Translation Reference Rev. 1.5.
• Support NVMe Error Reporting & Recovery.
• S.M.A.R.T Drive Monitoring.
• Compliant with NVM Express Base Specification Rev. 1.4c.

4. Setup and Installation

Follow these steps to install your M.2 NVMe SSD into the JEYI Enclosure:

1. Unscrew the Back Cover: Use the provided screwdriver to twist the screws and open the back cover of the enclosure.
2. Insert the SSD: Carefully insert your M.2 2280 NVMe SSD (M-Key or B+M-Key) into the M.2 slot. Ensure it is fully seated.
3. Fix the SSD: Secure the SSD with the provided screw.
4. Apply Thermal Pads: Paste the silicone thermal pads onto the SSD. This helps in efficient heat transfer to the aluminum case.
5. Close the Cover: Put the back cover back on and lock the case screws.

Image: Simple to Installation

SSD Compatibility:

This enclosure exclusively supports M-Key and B+M-Key NVMe SSDs of size 2280. It does not support SATA drives or other M.2 SSD sizes (e.g., 2230, 2242, 2260).

Image: Only Support M.2 2280 NVMe SSD

5. Operating Instructions

1. Connect to Host Device: Plug the Thunderbolt 4/3 cable into the Type-C port of the enclosure and connect the other end to a compatible port on your computer (Thunderbolt 4/3, USB 4.0, USB 3.2, USB 3.1, USB 3.0, or USB 2.0).
2. Plug-and-Play: The enclosure is plug-and-play and generally does not require any driver installation. Your operating system should automatically detect the connected SSD.
3. Data Transfer: Once recognized, you can access the SSD like any other external drive for data storage and transfer.

Speed and Compatibility:

The enclosure supports various transmission protocols with adaptive speeds:

• Thunderbolt 4/3 / USB 4: Up to 40Gbps (Theoretical max read: 3200MB/s, write: 2700MB/s due to protocol conversion losses).
• USB 3.2 Gen 2x2: Up to 20Gbps.
• USB 3.2 Gen 2 (USB 3.1 10G): Up to 10Gbps.
• USB 3.2 Gen 1 (USB 3.0): Up to 5Gbps.
• USB 2.0: Backward compatible.

Image: Adaptive Transmission Protocol

Image: Wide Protocol Compatibility

PWM Turbo Fan Operation (TB-2464 Fan model only):

The PWM temperature-controlled silent fan in the TB-2464 Fan model operates automatically:

• The fan starts briefly when powered on, then stops.
• It will only run again when the SSD temperature exceeds 40°C.
• Between 45°C and 55°C, the fan light is blue, and its speed increases with temperature.
• When the temperature rises further, the light turns red, and the fan runs at full speed for maximum cooling.

Image: PWM Turbo Fan

6. Maintenance

Heat Dissipation:

The full aluminum alloy case, combined with thermal compound pads, provides excellent heat dissipation. For the TB-2464 Fan model, the built-in PWM turbo fan further enhances cooling, ensuring optimal SSD performance and longevity.

Image: Full Aluminum Case

Image: Built-in Cooling Fan (TB-2464 Fan only)

Image: Efficient Cooling Design

Durability:

The enclosure is constructed with robust aluminum alloy using CNC machining technology, designed to withstand drops of up to 2 meters, ensuring the safety and reliability of your data.

Image: Sturdy Aluminum Alloy Enclosure

General Care:

• Keep the enclosure clean and free from dust.
• Avoid exposing the device to extreme temperatures or humidity.
• Always handle with care to prevent physical damage.

7. Troubleshooting

Common Issues and Solutions:

• Compatibility issues with some MAC devices: If you experience compatibility problems with a Mac, download the latest firmware from the official JEYI website (JEYI.COM) and upgrade it using a Windows computer. The ASM2464 chip is optimized for JHL8XXX Thunderbolt chips. If the issue persists after a firmware update, please check the JEYI website for newer firmware versions.
• Windows 11 does not detect the drive:
  • Ensure the enclosure is securely connected to your computer.
  • Check if the SSD is properly installed inside the enclosure.
  • Verify that the SSD is initialized and formatted in Disk Management (Windows) or Disk Utility (Mac).
  • Try connecting the enclosure to a different USB/Thunderbolt port or another computer to rule out port-specific issues.
• Fan not running (TB-2464 Fan model): The fan is temperature-controlled. It will only activate when the SSD temperature exceeds 40°C. A brief spin upon power-on is normal, after which it will stop until the temperature threshold is met.
• Slow transfer speeds: Ensure you are using a compatible Thunderbolt 4/3 or USB 4.0 port and cable to achieve maximum speeds. Older USB ports will result in lower speeds due to backward compatibility.

8. User Tips

• Maximize Write Speed: To potentially increase write speeds, consider enabling write caching in your operating system's device manager settings for the external drive.
• Optimal Performance: For the best performance, always connect the enclosure to a Thunderbolt 4/3 or USB 4.0 port on your host device.
• Data Organization: Utilize the included DIY labels to categorize and organize your data for different usage scenarios (e.g., 'Work', 'Film', 'Game', 'Backup').

Image: Come with DIY labels

9. Warranty and Support

For technical support, firmware updates, or any product-related inquiries not covered in this manual, please visit the official JEYI website at JEYI.COM or contact their customer service directly.