Supports 2x 2.5 -inch U. 2/U. 3 PCIe NVMe SSD, up to 15mm drive height ^^ Installs into any standard external 5.25 -inch optical drive bay ^^ Uses 1x Slimline SAS (SFF-8654-8i) connector ^^ Supports PCIe 4.0 specification with transfer rates up to 64Gb/s per drive bay ^^ Eagle-hook tray latch securely holds the trays inside the enclosure