1. Introduction
The Blueendless M.2 Dual Bay SSD Docking Station is a versatile device designed for efficient management and duplication of M.2 NVMe and SATA solid-state drives. It supports simultaneous read/write operations and features a convenient one-key offline cloning function, making data backup and transfer seamless. This manual provides detailed instructions for setup, operation, and maintenance of your docking station.

Figure 1: Blueendless M.2 Dual Bay SSD Docking Station in use.
2. Package Contents
Please check the package for the following items:
- Blueendless M.2 Dual Bay SSD Docking Station
- 5V3A Power Adapter
- USB-C to USB-C Cable
- User Manual (this document)
3. Setup Instructions
3.1 Power Connection
- Connect the provided 5V3A power adapter to the DC IN port on the docking station.
- Plug the power adapter into a wall outlet.

Figure 2: Power adapter connection.
3.2 Connecting to a Computer (for Online Use)
- Connect one end of the USB-C cable to the Type-C port on the docking station.
- Connect the other end of the USB-C cable to an available USB-C or USB-A port on your computer (an adapter may be needed for USB-A).
- The docking station is driver-free and compatible with Mac OS, Windows, Linux, and Android operating systems.
3.3 Inserting M.2 SSDs
The docking station supports various M.2 specifications and key types. Please confirm your SSD's compatibility before insertion.
- Supported M.2 Specifications: 2230, 2242, 2260, 2280, 22110.
- Supported Key Types: B&M Key and M Key (B Key is not supported).
- Supported Protocols: NVMe and SATA. Ensure your SSD has NVMe or SATA icons printed on it.
- Gently insert your M.2 SSDs into the designated slots (M.2 NVMe or M.2 SATA) on the docking station. Ensure they are fully seated.
- The docking station is designed for direct plug-in, requiring no installation.

Figure 3: Compatible M.2 SSD specifications.

Figure 4: M.2 Key and Protocol Compatibility.
4. Operating Instructions
4.1 Online Data Transfer
When connected to a computer, the docking station allows for simultaneous read and write operations on two M.2 SSDs. It supports up to 8TB total capacity (4TB per single disk).
- High-Speed Transfer: Enjoy speeds of up to 20Gbps for NVMe SSDs and 6Gbps for SATA SSDs. A 1GB file can be transferred in approximately 1 second.
- Versatile Applications: Use for fast file transfers between connected computers, transferring photos and videos between smartphones/tablets, or connecting to a monitor for editing high-definition videos and movies.

Figure 5: High-speed data transfer capabilities.

Figure 6: Simultaneous dual-drive reading supporting 8TB capacity.
4.2 One-Key Offline Clone Function (DB280NA Model)
The DB280NA model supports offline disk duplication without needing a computer connection. Both hard drives must be of the same protocol (NVMe to NVMe, or SATA to SATA) for this process.

Figure 7: Offline copy switch.
- Prepare Drives: Insert the source M.2 SSD into the 'Source' slot and the target M.2 SSD into the 'Target' slot. Ensure the target drive has equal or greater capacity than the source drive.
- Set to Copy Mode: Switch the dial on the docking station to the "Copy" position.
- Initiate Clone: Connect the power adapter. Press and hold the 'Copy' button until all indicator lights (25%, 50%, 75%, 100%) begin to flash.
- Start Duplication: Release the button, then press it again to start the cloning process.
- Monitor Progress: The indicator lights will flash sequentially (25%, 50%, 75%, 100%) to show the cloning progress.
- Completion: Once all four indicator lights remain steadily lit, the cloning process is complete.

Figure 8: Offline Copy Operation Method.
5. Maintenance
5.1 Heat Dissipation
The docking station features a 360-degree hollow-out design to ensure efficient heat dissipation, reducing heat buildup and lag during operation. Ensure the ventilation holes are not obstructed.

Figure 9: Efficient heat dissipation design.
5.2 General Care
- Keep the device clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the device to extreme temperatures or humidity.
- The docking station is equipped with non-slip foot pads for stability.
- The LED indicator light provides visual feedback on device status.

Figure 10: Product details highlighting design features.
6. Troubleshooting
- Device not powering on: Ensure the 5V3A power adapter is securely connected to both the docking station and a working power outlet.
- SSD not recognized by computer:
- Verify that the M.2 SSDs are correctly inserted into their respective slots.
- Check if the SSD's key type (B&M Key or M Key) and protocol (NVMe or SATA) are compatible with the docking station.
- Ensure the USB-C cable is properly connected to both the docking station and the computer.
- Try connecting to a different USB port on your computer.
- Offline cloning fails or does not start:
- Confirm that both source and target SSDs are of the same protocol (e.g., NVMe to NVMe, SATA to SATA).
- Ensure the target SSD's capacity is equal to or greater than the source SSD's capacity.
- Make sure the 'Copy' switch is in the correct position and the copy button sequence is followed precisely (press and hold until lights flash, then release and press again).
- Disconnect the docking station from the computer before attempting an offline clone.
- Slow transfer speeds:
- Ensure your computer's USB port supports the required speed (e.g., USB 3.1 Gen 2 for 20Gbps NVMe).
- Check the quality of the USB-C cable.
- Verify that the SSDs themselves are capable of the advertised speeds.
7. Specifications
| Feature | Detail |
|---|---|
| Brand Name | Blueendless |
| Model Numbers | DB280N, DB280NA, DB280NC |
| External Interface | USB (Type-C) |
| Internal Interface | M.2 NVMe, M.2 SATA |
| Supporting Hard Drive Capacity | Up to 8TB (4TB per single disk) |
| Transfer Speed (NVMe) | 20Gbps |
| Transfer Speed (SATA) | 6Gbps |
| Case Material | ABS Plastic |
| Dimensions (L x W x H) | 102mm x 66mm x 13mm |
| System Compatibility | Mac OS, Windows, Linux, Android |
| Power Adapter | 5V3A |

Figure 11: Product Specifications Diagram.
8. User Tips
- SSD Compatibility: Always double-check the key type (B&M or M) and protocol (NVMe or SATA) of your M.2 SSDs to ensure they are compatible with the docking station. Incorrect insertion or incompatible drives can lead to issues.
- Offline Cloning Best Practices: When performing an offline clone, ensure the target drive has sufficient capacity (equal to or larger than the source drive). For optimal performance and to prevent data loss, it's recommended to back up critical data before cloning.
- Power Supply: Always use the provided 5V3A power adapter to ensure stable and sufficient power for the docking station, especially during high-speed transfers or cloning operations.
- Heat Management: While the device has a hollow-out design for heat dissipation, avoid placing it in enclosed spaces or covering the ventilation areas during prolonged use.
- RGB Lighting: The RGB rainbow lighting effect is an aesthetic feature. It also serves as a visual indicator for power and activity.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your proof of purchase for any warranty claims. Blueendless is committed to providing reliable products and customer satisfaction.