This is a Type-C USB 3.1 to 3 port USB female cable and 1 micro USB charging port,

it is suitable for smartphone or tablet that with Type-C port need to connect to USB devices like computer mouse,

keyboard, USB flash drive... etc, while you need power supply from external power source. 

Three USB ports can connect to keyboard, mouse, card reader, and so on (can't connect to hard disk)

One micro USB power port for connecting to 5V power supply

Switch to "OTG" can read 3 USB devices data at the same time (not support 2 thumb drives)

Switch to "Charge" mode when mobile device need charging

Portable and practical, save working space and easily take it to everywhere

Specifications:

Interface: Type-C USB 3.1

Color: Black

Size: 19 x 7.5 x 1cm (7.5 x 3 x 0.4 inch)

Weight: 30g

Package include:

1*Type-C to USB hub

Note:

It does not work with exteranl HDD.

It does not support OTG and charge work at the same time.