Where to get a USB type E front panel motherboard header?
Thanks to the efforts of user Amyk in my post on the EEVBlog Forum, I now have part numbers from two manufacturers in China.
C8656-20CFDSAQR from Hsuan Mao Technology Co., Ltd
WU3IR-20A1L1PHW5 from WinWin Precision Industrial Co., Ltd
Not sure if actually procuring these parts will be practical/cost effective for my project, but at least now I have the information to find that out.