I am looking at your SYS-F617H6-FTL+. I see that there is a bracket (MCP-240-00134-0N) and description of the following: 2.5 HDD bracket for add-on-card slot in SCF414IS & SC816LT.
Will there be any issues with installing an 10GbE PCIe NIC when these bays are occupied?
You will not be able to install it because when the HDD bracket is occupied it will cover the PCI slots on the motherboard.