4 Port USB 2.0 Extension Power Hub With Independent Switches.
This hub works perfectly with devices like printer, Keyboard, Mouse, etc (These can be run without adapter). This device is not meant for high speed data transfer.
To get a good speed for data transfer, you need to use, 5V/2A or 5V/1A converter adapter.
White Mini 4 Port USB 2.0 High Speed Hub On / Off Switch for PC Laptop 100% New and High Quality 4 port high speed USB 2.0 HUB Over current protection, Plug and play Friendly and ergonomic design.