This portable USB (Universal Serial Bus) 3.0 hub gives you an easy way to add four USB (Universal Serial Bus) 3.0 Type-A ports to your laptop, with individual power switches to save power. The USB (Universal Serial Bus) port expander plugs easily into your laptop's USB (Universal Serial Bus) Type-A port. Plus, it's bus-powered for easy portability. Use your existing USB (Universal Serial Bus) 3.0 devices such as flash drives, mouse, keyboard & external hard drives. The 4-port USB (Universal Serial Bus) 3.0 hub expands your computer's USB (Universal Serial Bus) Type-A port into four USB (Universal Serial Bus) 3.0 (Type-A) ports, & it's backward compatible with your older USB (Universal Serial Bus) 2.0 devices. (USB 3.0 is also known as USB (Universal Serial Bus) 3.1 Gen 1.) Each port on the USB (Universal Serial Bus) 3.0 hub has its own power switch so you can turn off devices when they're not in use. That means you can better manage power consumption for your USB (Universal Serial Bus) devices, without having to physically disconnect the device or cable. With its compact, lightweight design, this hub is perfect for portable use. The versatile USB (Universal Serial Bus) to USB (Universal Serial Bus) hub is bus-powered, with no need for an external power adapter. You can travel lighter with fewer cables to carry with you. The 4-Port USB (Universal Serial Bus) 3.0 hub installs automatically when you connect it to your laptop, so you can be up & running in seconds.