I have discovered that my TBS 6285 is not recognised or detected in my new motherboard which is an Asus H170M-E D3. It does however work fine on an older motherboard. Searching these forums I have seen multiple reports of similar issues and that this is likely due to a PCIe compatibility problem with this card. I have also seen reports that this inherent fault has now been fixed in the revised TBS 6205.
I purchased my TBS 6285 just last year and so have emailed support about this. I am awaiting their response.