Check NAS compatibility list: https://www.qnap.com/en/compatibility/
Gen 6 dual-port 32Gb Fibre Channel Host Bus Adapter, 2 x 32Gbps fibre channel ports supporting 32Gb/16Gb/8Gb FC. PCIe Gen3 x8. Low profile 10.68 x 6.89 cm (4.20 x 2.71 inches). 2 x 32Gb LC SR shortwavelength transceivers included, up to 100 meters (328.08 ft.).
Note: The FC adapter can only be supported on QNAP QTS & QTS Hero NAS operating systems.