I'll have to shoot a better picture, in a bit.
The connector is about 1 mm wider, than the usual ',micro' USB C, and is connector for charging a mattress air pump. I have 2 kinds of cable, in my salvage box, one is a normal looking full size USB on one end, with that wider micro on other end. The regular larger end goes to your wall wart.
Obviously, purchased around town. Many new DC powered things, like food blenders, might be using that for recharging.
Total mystery (where I got) the cable having that wider connector on BOTH ends.
Thanks.