I bought this and it works perfectly:
Monoprice 6ft USB 2.0 A Male to A Male 28/24AWG Cable (Gold Plated) - Blackfor Data Transfer Hard Drive Enclosures, Printers, Modems, Cameras and More! (105443) https://www.amazon.com/dp/B002KKZRYM/ref=cm_sw_r_cp_api_glt_fabc_GWHWWAZ43TB6RPWM4K1B?_encoding=UTF8&psc=1
That and HDMI and all set.
I purchased https://smile.amazon.com/gp/product/B08KPD5S82 - which worked fine. It did backfeed to the PC I'm controlling but that didn't have nay issues.
That said, I took the USB Male-Male cable (https://smile.amazon.com/gp/product/B002KKZRYM) and used a sharp knife to slice open the outer sheath and then cut the red cable. Verified that there was no power anymore and pikvm still has full control.