Greetings!
While the JL081A module does support PoE+, this functionality is only available when the module is installed in a switch (2930M or 3810M) that also supports PoE+. This is due to the fact that PoE+ requires the 54VDC voltage provided by a PoE+ capable power supply, which can only be installed in a PoE+ switch model.
Non-PoE+ switch models only accept a 12VDC power supply, which cannot supply sufficient voltage to power PoE/PoE+ devices. As such, PoE-related commands are not available in the CLI for these switch models.
Note that the HPE Smart Rate ports on the JL081A module will otherwise function normally at all supported line rates.