Product details:

Add support for four M.2 SSDs to your compatible QNAP NAS using the Quad M.2 2280 PCIe Gen2 x4 SATA SSD Expansion Card from QNAP. The four drive slots support M.2 2280 SATA SSDs and interface with your QNAP NAS using a PCIe Gen2 x4 connection. M.2 SSDs can be installed to form caching pools or an auto-tiering volume while integrated thermal sensors allow for real-time temperature monitoring. A quiet cooling module made up of a heatsink and a fan help minimize overheating risks and maintain high performance. Please be aware that M.2 SSDs are not included.