1. Introduction
The UGREEN 40Gbps M.2 NVMe SSD Enclosure (Model CM850) provides a high-speed, portable storage solution for your M.2 NVMe SSDs. Designed for optimal performance and data protection, this enclosure features advanced cooling mechanisms and broad compatibility across various operating systems and devices.
Key Features:
- 40Gbps Data Transfer: Equipped with an ASM2464PD chip, achieving read/write speeds of approximately 3600Mbps. Compatible with USB4/3.2/3.1/3.0/2.0 and Thunderbolt 3/4.
- Intelligent Cooling: Features a PWM turbo high-speed fan and thermal pads to maintain optimal operating temperatures, extending SSD lifespan.
- Wide Compatibility: Supports M/B+M key NVMe SSDs up to 8TB, in sizes 2230/2242/2260/2280. Compatible with Windows, Mac OS, Linux, and Android systems. (Note: Does not support SATA NGFF or mSATA SSDs).
- Secure & Stable: Supports UASP and Trim for reliable data transmission. Aluminum alloy casing with a silicone cover provides protection against accidental drops.
- Plug and Play: No additional power supply or drivers required for operation.
2. Package Contents
Verify that all items are present in the package:
- 1 x UGREEN M.2 NVMe SSD Enclosure (CM850)
- 1 x USB-A to USB-C Cable
- 1 x USB-C to USB-C Cable
- 1 x Small Screwdriver
- 1 x Thermal Pad
- 1 x User Manual
3. Specifications
| Feature | Description |
|---|---|
| Model Number | CM850 |
| Material | Aluminum Alloy |
| Data Transfer Rate | 40 Gigabits Per Second (Theoretical Max) |
| Max Storage Capacity | 8 TB |
| Compatible SSD Types | M-Key / B+M Key NVMe SSDs (PCIe based) |
| Compatible SSD Sizes | 2230, 2242, 2260, 2280 |
| Interface | USB Type-C (USB4/Thunderbolt 3/4 compatible) |
| Cooling System | PWM Turbo Fan, Thermal Pads |
| Operating Systems | Windows, Mac OS, Linux, Android |
| Product Dimensions | 48.27"L x 22.6"W x 7.24"H |
| Item Weight | 4.8 ounces (136 Grams) |
4. Setup and SSD Installation
Follow these steps to install your M.2 NVMe SSD into the enclosure:
- Remove Silicone Case: Gently slide off the protective silicone cover from the enclosure.
- Open Enclosure: Use the provided screwdriver to unscrew the panel fixing screws and open the enclosure.
- Insert SSD: Carefully insert your M.2 NVMe SSD into the M.2 slot at a 45-degree angle. Ensure the notches align correctly.
- Secure SSD: Press down the SSD and secure it with the provided screw.
- Apply Thermal Pad: Attach the thermal pad onto the M.2 SSD. Ensure it covers the main chips for effective heat dissipation.
- Close Enclosure: Reattach the panel and secure it with the screws. Slide the silicone case back onto the enclosure.
Figure 1: Visual guide for SSD installation steps.
Video 1: Detailed setup and speed test for the UGREEN USB4 enclosure. This video demonstrates the physical installation of an SSD into the enclosure and subsequent speed testing.
5. Operating Instructions
5.1 Connecting the Enclosure
Connect the UGREEN SSD Enclosure to your computer or compatible device using one of the provided USB-C cables. The enclosure is plug-and-play, meaning no additional drivers are typically required for basic functionality.
5.2 Initializing and Formatting the SSD
For a new SSD, it must be initialized and formatted before use. The process varies slightly depending on your operating system:
Video 2: Hard Disk Formatting and Partitioning Operation Guide. This video provides a visual walkthrough of how to format and partition your SSD on Windows, macOS, and Linux systems.
For Windows:
- Right-click on 'This PC' and select 'Manage'.
- In 'Computer Management', select 'Disk Management'.
- Locate your newly added hard disk (it will likely be marked as 'Unallocated').
- Right-click on the unallocated space and select 'New Simple Volume'.
- Follow the 'New Simple Volume Wizard' prompts, keeping default values or adjusting as needed. Choose a file system (e.g., NTFS for Windows compatibility, exFAT for cross-platform).
- Complete the wizard to format and partition the disk.
For macOS:
- Use the key combination Command+Spacebar to open Spotlight Search.
- Type 'Disk Utility' and press Enter to open the application.
- In Disk Utility, select your newly added hard disk from the sidebar.
- Click the 'Erase' button in the toolbar.
- Enter a name for the disk, choose a format (e.g., APFS for macOS, exFAT for cross-platform), and a scheme (e.g., GUID Partition Map).
- Click 'Erase' and wait for the process to complete.
For Linux:
- Open a terminal (e.g., Ctrl+Alt+T).
- Install exFAT utilities if not already present:
sudo apt install exfat-fuse exfat-utils -y(for Debian/Ubuntu-based systems). - Open the 'Disks' utility (often found in applications menu).
- Select your newly added hard disk from the left panel.
- Click the '+' button to create a new partition.
- Choose the partition size and select a file system (e.g., exFAT for cross-platform compatibility).
- Click 'Create' to format. Once formatted, click the play icon to mount the partition.
6. Maintenance
6.1 Cooling System
The enclosure features an intelligent PWM turbo fan and thermal pads to manage heat. Ensure the ventilation grilles on the enclosure are not obstructed to allow for proper airflow. The fan will automatically adjust its speed based on the SSD's temperature to prevent overheating and maintain stable performance.
Figure 2: Internal cooling design with PWM turbo fan and thermal pads.
6.2 Physical Protection
The aluminum alloy casing combined with the surrounding silicone cover provides robust protection against physical damage from accidental drops and scratches. Keep the silicone cover on during use and transport for maximum protection.
6.3 General Care
- Keep the enclosure clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the enclosure to extreme temperatures or humidity.
- Do not attempt to disassemble the enclosure beyond the SSD installation steps, as this may void the warranty.
7. Troubleshooting
7.1 Enclosure Not Detected
- Check Cable Connection: Ensure the USB cable is securely connected to both the enclosure and your device. Try a different USB port or cable.
- Verify SSD Installation: Re-open the enclosure and ensure the M.2 NVMe SSD is correctly seated and secured.
- Initialize/Format SSD: For new SSDs, ensure it has been initialized and formatted according to the operating system instructions in Section 5.2.
- Compatibility: Confirm your SSD is an NVMe (M-Key or B+M Key) and not a SATA M.2 SSD. The enclosure does not support SATA M.2 drives.
7.2 Slow Transfer Speeds
- Port Type: Ensure you are connecting to a USB4 or Thunderbolt 3/4 port on your device for maximum speed. Connecting to older USB ports (e.g., USB 3.0/3.1 Gen 1) will result in lower speeds.
- Cable Quality: Use the provided high-quality USB-C to USB-C cable for optimal performance.
- SSD Performance: The actual speed is also limited by the performance of your M.2 NVMe SSD.
- System Load: High CPU usage or other background processes can affect transfer speeds.
7.3 Automatic Ejection (macOS)
Some users may experience the enclosure automatically ejecting during macOS sleep mode. This is a known behavior with some external drives and macOS power management. To mitigate this:
- Adjust Energy Saver Settings: In macOS System Settings (or System Preferences), navigate to 'Energy Saver' (or 'Battery' on newer Macs) and disable 'Put hard disks to sleep when possible'.
- Safely Eject: Always safely eject the drive before putting your Mac to sleep or shutting it down.
8. Warranty and Support
UGREEN products are designed for reliability and performance. For warranty information and technical support, please refer to the official UGREEN website or contact UGREEN customer service directly. Keep your purchase receipt for warranty claims.
Manufacturer: Ugreen Group Limited
