Q10022102 - ARC-1883 does not show up while the server is booting, nor is it visible in the Supermicro X11SRL-F-O motherboard's BIOS.
The slot 6 is x16 slots. This x16 slot seems to support graphic cards only but not others. We had tested various add-on cards on x16 slot without success. Other slots can recognize 1883 without problem.