Hi and welcome to JustAnswer,
Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, is the "...XLR port..." also able to provide phantom power?
What is the model number of the device/equipment that has the "...XLR port..." please?
Does it have any markings/label that say "PHANTOM POWER" or "+48V" or "PP" or a term to such effect?