The USB (Universal Serial Bus)-C 4 port USB (Universal Serial Bus) hub means that you can connect up to four USB (Universal Serial Bus) 3.0 devices to a computer with a USB (Universal Serial Bus)-C port (Macbook Chromebook etc..) The USB (Universal Serial Bus) Type-C female port can be used to charge or power the host computer while the adapter is in use. Features USB (Universal Serial Bus)-C to 4 x USB (Universal Serial Bus) 3.0 Type-A Supports USB (Universal Serial Bus) 3.0 Super Speed (5 Gbps) transmission backwards compatible with USB (Universal Serial Bus) 2.0 4x USB (Universal Serial Bus) 3.0 ports one port supports BC1.2 battery charging max power 7.5W (5V/1.5A) USB (Universal Serial Bus) Type-C female port for charging the host computer Supports plug & play hot swap