Sorry no. I do have several brand new original native PS/2 Model M keyboards available https://www.modelfkeyboards.com/product-category/all-keyboard-choices/
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commented
A passive adapter will not work. I think it can be converted actively but have not confirmed this.

Sorry to drudge up this old thread, haha!
By “sorry no” do you only mean that a passive adapter will not be enough, or do you mean the signal cannot be converted even with an active adapter?
Cheers!