The Fusion card supports two U.2 NVMe PCIe Gen 3 SSDs, which share the same form factor as 2.5-inch SATA drives but can access or write data up to seven times faster.

The Fusion Dual U.2 SSD PCIe Card enables users to install two enterprise-class U.2 SSDs, which are sold separately, into a full-length PCIe card slot, avoiding the need for cables, adapters, or mounting trays. It is aimed at high performance, in particular video editors, who need to add storage to their computer setup and require ultra-high-speed data transfer speeds for a smooth workflow. The firm singled out video editors working with 6K and greater resolution footage as ideal candidates.

Mainstream U.2 SSDs are currently available in capacities up to 16 TB and support data transfers at up to 3,500 MB/s. With two SSDs installed on the Sonnet card and configured as a RAID 0 set, sustained data transfers up to 6,250 MB/s are possible.

The firm claims the Fusion Dual U.2 SSD PCIe Card will work out the most economical way to add ultra-fast, extra-large-capacity storage to computers in many cases, especially for 2019 Mac Pro users. The Fusion card plus two 3.84 TB U.2 SSDs configured in a RAID 0 set deliver up to 184% the performance of the factory-installed 8 TB storage option, but at 32% lower cost per terabyte, according to the company. Purchasing larger U.2 SSDs, Mac Pro users can install up to four times as much capacity as offered by Apple.

Compatible with macOS, Windows, and Linux, the Fusion Dual U.2 SSD PCIe Card is the only product available that mounts two U.2 SSDs directly to the PCIe adapter card, so the company claimed. It suggests that other U.2 SSD adapter cards still require separate mounting space for the SSDs in the computer, plus additional data and power cables to connect the SSDs to the card and computer, respectively.