M.2 PCIe 3.0 x4 NVMe to PCIe x4 host adapter with heatsink kit.M.2 SSD to PCIe adapter card with heatsink cooler M.2 PCIe 3.0 x4 NVMe to PCIe x4 host adapter.PCB exposed copper coupled with an additional heatsink design – reduces SSD heat and enhances performance.Designed for M.2 PCIe SSDM.2 SSD heatsink.Thermal pad x 2 ( T:2.3mm / 1.5mm ).M.2 SSD to PCIe adapter card.Reduces M.2 SSD heat and enhances performanceEasily installs in a PCIe Gen3 x4, x8 or x16 PCIe slot. Backwards compatible with PCIe Gen2