Port: 4pcs Color: black Material:ABS+UV Interface: USB 3.0 Support for Windows and for Mac operating systems. Support hot swap, no need to install additional drivers. With an external power connector, you can connect to the power supply. Readable data; rechargeable; computer audio interface extended to the desktop. With a line length of 150mm, the USB interface can be extended from the chassis to the desktop, making it easy to connect any USB device to the desktop. Package Included: 1PC * USB 3.0 4 Port Hub Note: 1. Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. Please refer to the actual product.Thanks For Your Understanding. 2. Please allow 0.5-2cm differences due to manual measurement.