Fits 4x M. 2 NVMe SSDs of all lengths, 30mm (2230), 42mm (2242), 60mm (2260), 80mm (2280), and 110mm (22110) ^^ Installs into any standard external 5.25" optical drive bay ^^ Supports Tri-mode controllers PCIe/NVMe pinout (Broadcom, Areca, and more) ^^ Connects with 4x OCulink (SFF-8612) (NVMe host required) ^^ Supports PCIe 4.0 specification with transfer rates up to 64Gb/s per drive bay