Hi @PaulC76,
Welcome to the HP Support Community
I understand you need information on finding MAC Address for your HP LaserJet MFP M232e-M237e Printer. Not to worry I will help you to get a resolution to resolve the issue.
You have to print a network configuration report:

If it does not work, then we can use the command prompt to find the MAC Address of any device:
- Open a command-line window on any network-attached computer. ( Click on start icon and type cmd to open command prompt)
- Type “arp -a” without the quotation marks at the command prompt and press the “Enter” key.
- Look at the entry immediately to the right of the printer's IP address. The MAC address appears as six sets of two hexadecimal characters separated by dashes. For example: 00-80-77-91-0b-8a.
I hope that answers your concern adequately. Let me know!
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ANAND_ANDY
I am an HP Employee