QM2 Expansion Card (Add M.2 SSD Slots) Flexible and versatile, boosts performance and functionality QM2 series PCIe cards add support for M.2 SSDs to a QNAP NAS, allowing users to configure SSD caching, a caching pool, or an auto-tiering volume to improve overall NAS performance. Tackle performance bottlenecks QM2 boosts performance by adding M.2 SSDs. It doesn't occupy any 3.5-inch drive bays, allowing you to maximize both your storage capacity and performance. M.2 SSDs can be installed to form caching pools or an auto-tiering volume. Enables SSD caching to boost performance and optimizes storage efficiency with Qtier Technology. M.2 SSD thermal sensors allow real-time M.2 SSD temperature monitoring. A quiet cooling module (heatsink and smart fan) minimizes overheating risks and sustains constant high performance. LED indicators for monitoring M.2 SSD status.