UGREEN CM302 M.2 NVMe to PCI-E 3.0 × 4 Expansion Card (UG-70503)
The UGREEN CM302 offers high-performance storage expansion for desktop computers. This adapter card enables the addition of blazing-fast NVMe storage to compatible systems through a PCIe slot.
Advanced NVMe Support
The CM302 features dedicated PCIe lane allocation for maximum NVMe performance:
- PCIe 3.0 x4 bandwidth (up to 32 Gbps theoretical)
- Support for sequential read speeds up to 3500 MB/s
- Support for sequential write speeds up to 3000 MB/s
- Full NVMe protocol implementation
Furthermore, the expansion card supports various M.2 NVMe SSD form factors, including 2242, 2260, 2280, and 22110 lengths. This compatibility consequently ensures flexibility when selecting storage devices based on capacity and performance needs.
Efficient Thermal Management
The UGREEN CM302 incorporates multiple cooling solutions to maintain optimal SSD performance:
- Large aluminum heatsink with thermal pads
- Integrated copper heat pipes for enhanced dissipation
- Passive cooling design (no fans or moving parts)
- Thermal protection to prevent overheating
These cooling features therefore reduce thermal throttling during intensive operations, helping maintain consistent performance during large file transfers or sustained workloads.
Quality Construction
The CM302 features robust build quality for reliability and longevity:
- Gold-plated PCIe connector pins for stable signal transmission
- Premium PCB with multiple copper layers
- Solid capacitors for power stability
- Durable bracket with precise cutouts
Additionally, the expansion card includes a secure mounting mechanism with adjustable standoffs for different M.2 SSD lengths, ensuring proper installation without stress on the drive.
System Integration
The UGREEN CM302 provides seamless integration with desktop computers:
- Standard PCIe x4 physical slot requirement
- Compatible with larger PCIe slots (x8/x16) as well
- No additional drivers required for standard operation
- Bootable capability with compatible motherboards
These features make the CM302 suitable for both system drive and secondary storage applications, depending on motherboard BIOS support.
Ideal Users for the UGREEN CM302 M.2 NVMe Expansion Card
- Content creators: Video editors and graphic designers benefit from the high-speed data transfer rates when working with large media files, reducing rendering and loading times significantly.
- Gaming enthusiasts: The NVMe speeds enable faster game loading times and improved system responsiveness compared to traditional SATA-based storage solutions.
- System builders: Those constructing high-performance PCs gain additional M.2 slots beyond motherboard limitations, allowing for expanded storage configurations.
- IT professionals: Technicians can repurpose M.2 NVMe drives from laptops into desktop systems or create high-speed backup solutions for critical data.
Physical Specifications
- Card dimensions: 120 × 22 × 120mm (with heatsink)
- Heatsink material: Aluminum with copper heat pipes
- Interface: PCIe x4 (standard height bracket)
- Color: Black with silver heatsink
- Weight: 180g
Technical Specifications
- Host interface: PCIe 3.0 x4 (up to 32 Gbps)
- Storage interface: M.2 (M-key) for NVMe SSDs
- Supported M.2 lengths: 2242, 2260, 2280, 22110
- Maximum transfer speeds: Up to 3500 MB/s read, 3000 MB/s write
- Boot support: Dependent on motherboard BIOS
Compatibility Specifications
- Motherboard requirements: Available PCIe 3.0 x4, x8, or x16 slot
- Compatible SSDs: NVMe PCIe M.2 SSDs (M-key)
- Not compatible with: SATA-based M.2 SSDs (B-key or B+M key)
- Operating systems: Windows 11/10/8.1/8/7, macOS, Linux
Package Contents
- UGREEN CM302 M.2 NVMe to PCIe expansion card
- Mounting screws and standoffs
- Thermal pads
- User manual
- Warranty card
