How to choose the correct QM2 card for your QNAP
QM2 cards by QNAP are designed to increase the performance of your NAS. These cards are compatible with PCIe slots, and most NAS models made by QNAP are equipped with these peripheral slots. These specialized cards use M.2 SSD drives to enable users to employ SSD caching, caching pool, or auto-tiering technology to improve the speed and responsiveness of their NAS units, and since they utilize PCIe slots, they don't take up any of the drive bays in your NAS. Some of the expansion cards in the QM2 line are also designed to increase the ethernet connectivity of your NAS, and these cards have various unique features and compatibility specifications that may make a certain card a better choice for your particular QNAP NAS model.