Amazon.com: QNAP QM2-2S-220A Dual M.2 22110/2280 SATA SSD Expansion Card ( PCIe Gen2 X2), Low-Profile Bracket Pre-Loaded, Low-Profile Flat and Full-Height are Bundled : Electronics
QNAP QM2-2S10G1TA Dual M.2 2280 SATA SSD and Single-port 10 GbE Expansion Card at Lowes.com
QNAP QM2 series, 2 x PCIe 2280 M.2 SSD slots, PCIe Gen3 x 4 , 2 x Intel I225LM 2.5GbE NBASE-T port
Boost Performance with QM2 Expansion Cards
Amazon.com: QNAP Dual M.2 SATA SSD to 2.5” SATA RAID Adapter Converter - 2 x M.2 2280 SSD to 3.5” SATA Adapter with RAID Support for PC and NAS. (QDA-A2MAR) : Electronics
QNAP QM2-2P-344 Dual M.2 PCIe SSD Expansion Card, Supports up to Two M.2 2280/22110 Form Factor M.2 PCIe (Gen3 x4) SSDs, PCIe Gen3 x4 Host Interface, Low-Profile Bracket pre-Loaded - Newegg.com
QNAP QM2-2P-244A Dual M.2 22110/2280 Pcie SSD Expansion Card (PCIe Gen2 X4), Low-Profile Bracket Pre-Loaded, Low-Profile Flat and Full-Height are Bundled 2 x SSD : Electronics