Fits 1 x M. 2 PCIe NVMe SSD with all drive length including 2230 (30mm), 2242 (42mm), 2260 (60mm), 2280 (80mm), and 22110 (110mm) ^^ Use 1 x PCIe 3.0 / 4.0 x4 interface, also supports installation into PCIe 4.0 x8, and x16 slots ^^ Install into a single-width full-height expansion slot Optional screw holes available for low profile PCIe bracket (not included) ^^ Compatible with 2019+ Mac Pro PCIe expansion slots ^^ Integrated heat sink and ample ventilation for excellent passive cooling