1.usb baby hub and speaker,football usb hub 2.Coloful 4 Port ... 2.0 hub , 5.Suitable for promot usb baby hub and speaker,football usb hub* Support 4 USB devices at ... Mac OS X, and Linux OS* Over-current detection and protection for each downstream port* Plug-and-play and hot swapping functions * ... color optionalUSB hub, 1.1 or 2.0, CE and ROHS certifications,with or without speaker. different face .they ...