Qnap QM2: M.2 SSD PCIe Expansion Card Dual M.2 PCIe SSD slots, low-profile PCIeX4 adapter QM2-2P-384

Key features:
Ideal for NAS with single PCIe slot to boost performance and connectivity.
Up to two M.2 22110/2280 SSDs* can be installed to form a RAID 1 or RAID 0 caching pool or auto-tiering volume.
Enables SSD caching to boost performance and optimizes storage efficiency with Qtier Technology**.
Provides 10GbE connectivity and backwards compatibility with 5GbE/2.5GbE/1GbE/100MbE (QM2-2S10G1T and QM2-2P10G1T only).
M.2 SSD thermal sensors allow real-time M.2 SSD temperature monitoring.
A quiet cooling module (heatsink and smart fan) minimizes risk of overheating and sustains constant high performance.
LED indicators for monitoring M.2 SSD status.
* M.2 SSDs are not included as standard
** Check models that support Qtier on www.qnap.com