UGREEN 70504 Dual M.2 NVMe/SATA to PCIe 3.0 X4 Expansion Card

The UGREEN CM302 Model 70504 is a professional-grade dual-slot M.2 NVMe/SATA to PCIe 3.0 X4 express card engineered for desktop users, gamers, and content creators seeking high-speed storage expansion. With two independent M.2 slots, it supports both NVMe and SATA SSDs simultaneously—operate an M-Key NVMe drive and a B-Key SATA drive at the same time with no performance loss.​

Delivering blazing-fast 32Gbps speeds for NVMe drives (PCIe 3.0 X4) and up to 6Gbps for SATA drives, the 70504 enables 1GB file transfers in approximately 7 seconds, making it ideal for professionals handling large video files, software developers, and data-intensive applications. It supports all popular M.2 SSD sizes—2230, 2242, 2260, 2280—plus backward compatibility with 2210 drives. The card works with PCIe X4, X8, or X16 slots on modern motherboards for flexible placement.​

Built with gold-plated connectors (0.5mm gold thickness) providing anti-oxidation and stable operation, it includes multi-layer PCBA protection, optimized power supply management, and passive cooling design for long-term reliability. Installation is tool-free except for the included screwdriver—simply insert into a PCIe slot, secure the baffle with the provided screws, connect the SATA cable if needed, and enable PCIe in BIOS. No drivers required for Windows, Linux, or macOS.