Schrader connectors for medical air and nitrogen.

Thanks to Marvin and Jeff for the information about the HP LaserJet
P1606dn.  We'll work on it.

Here is a question about fluidic connectors.  Mechanical rather than
electrical.  Some readers work with medical equipment and may be able
to help.

Two connectors.
https://www.baycorporation.com/products/schrader-style-quick-connects/medical-air/sh-16-2s
https://www.baycorporation.com/products/schrader-style-quick-connects/nitrogen/sh-12-2s

In the photographs, they appear identical.  Aside from the markings,
is there a difference?

A sales rep. commented that the male N2 is sometimes connected to the
female air connector.

Are the male connectors interchangeable connecting to the female air
and nitrogen connectors?

Thanks,           ... P.