Doesn't look like any standard USB connector, but is most likely something Logitech came up with to avoid people using standard USB cables (perhaps there are some other non-standard aspects of the cable as well). Amazon seems to sell replacement cables/adapters, e.g. this:

https://www.amazon.com/gp/product/B0BMG16D4H/ref=ox_sc_act_title_1?smid=A6XCNHECO8F2V&psc=1