Rocstor Premium Slim Portable 4 Port USB-C Hub allows you to change your USB Type-C Port into 4 USB 3.0 Type-A Ports without the need for an external power supply because it is Bus Powered (transfer rates up to 5Gbps). This slim portable adapter increases your laptop's or desktop's connectivity through a single USB Type-C(tm) or Thunderbolt(tm) 3 port. The slim portable design is intended to be used on-the-go. This Slim Portable USB hub is compatible with a wide range of laptops and desktops. It also is compatible with many operating systems such as Windows®, Mac, Linux® and Chrome OS(tm). It installs automatically once you connect it to your laptop, simply plug-n-play, so you can be up and running in seconds. Bus powered, drawing power directly from your USB Type-C port on your laptop or desktop. This USB Type-C hub is an economical solution for keeping your existing USB Type-A devices and peripherals working, such as your printers, external hard drives and flash drives. Backed by Rocstor 2-Year Warranty.