how do I replace the paper size adjustment on my HP Officejet 3830?

[dtroop1575]

How do I replace the paper size adjustment on my printer?  I came off while trying to slide it for photo paper size,

[Nal_NR]

Hi @dtroop1575,

Welcome to the HP Support Community! I’m here to help.

I understand you are trying to print on custom-size paper. To know the supported paper size, refer to the printer specifications.

For assistance, kindly refer to - Create Custom Paper Sizes

Update the printer firmware

Click here to download and install the latest printer firmware from your Mac.

Click here to learn different methods of updating the printer firmware.

Hope this helps! Let me know how it goes. 

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Have a great day!