The gateway is PCI compliant -- assuming you have the latest patches on installed (the SHA-1 patch specifically).
Where do I look to ensure that patch is installed?
Well, we don't actually show you which patches are installed-- for whatever reason.
However, if you have the ability to download updates to the gateway you can click "Scan for Updates" and if the patch doesn't show in the needed updates (System --> Updates) then either you can't contact our download servers or you don't need to the patch. Unfortunately, that's about all you can do.