Ask the technical contact to identify the supplied interface from its own markings and the guide's document revision, with the mismatch shown clearly; matching arm labels do not establish which additional interface the seller supplied.
Ask that maker's authorised support route about the identified assembly as well, while keeping the seller responsible for explaining what it supplied; neither contact should guess from connector appearance
Keep the matched guide and seller's configuration confirmation with this package, then have the qualified reviewer establish the complete connection arrangement rather than treating a document match as permission to energise.
Useful document finding, with the remaining installation decision still named; the obsolete guide should not remain the easiest file for a covering maintainer to find