I found this is a MacPro upgrade group on a different platform:
The USB header on the logic board uses a Molex PicoBlade connector.
manufacturer link:
https://www.molex.com/molex/products/family?key=picoblade&channel=products&chanName=family&pageTitle=Introduction
retail link: 15 PCS 4 PIN 1.25mm Female Connector on One Side - 150mm 1571 28 AWG & 15 PCS 4 PIN 1.25mm Male Connector https://www.amazon.com/dp/B07HLF2MFJ/ref=cm_sw_r_cp_api_glt_fabc_R9H18TT6XQCFQ6W8N6XC?_encoding=UTF8&psc=1