Review on Cable Matters 2-Pack USB 3.0 Coupler Adapter - Female to Female Gender Changer by Julie Brown

These are easy to use, they are just high speed connectors connecting two high speed USB-A charging cables. The tricky part is adapting the other end of your cables to the car, charger, or port you want to charge. Good luck with it. I have some adapters I can sell you if you need ha! Beware. Old phones and technos overheat when you connect at high speed, which is impossible. Last time my screen protector blistered and I figured it probably wouldn't stand up to the heat.