This USB 3.1 (C) male to RJ-45, USB 3.0 (A) female black 3-port hub will allow your USB 3.1 (C) equipped MacBook®, laptop or PC to add three USB (A) ports to connect to printers, smart phones, MP3 players, GPS devices, tablets, external hard drives or any other USB (A) equipped device. Reversible USB Type (C) makes it easy to connect without having to see which side is up or down.