SilverStone ECM25 is a 1U adapter card designed for users who want to utilize or upgrade high speed M.2 devices such as SSDs on their existing PC or motherboard. The ECM25 is compatible with M.2 devices (medium key) and enhances storage performance via ultra-fast PCIe interface. ECM25 is an indispensable choice for users looking to expand their M.2 capacity with the fastest interface in low profile. ECM25 is an indispensable choice for users looking to expand their M.2 capacity with the fastest interface in low profile.