Qnap Dual M.2 22110/2280 PCIE SSd Expansion QM2-2P-244A, FF M.2 2280/22110, Storage controller, Silver, Full-profile bracket, Low-profile bracket, Host Bus PCIe 2.0 x4, Interface PCIe 2.0, Solid state drive. 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.