Plugable USB 2.0 4-Port High Speed Charging Hub with 12.5W Power Adapter and BC 1.1 Charging Support for for Android, Apple iOS, and Windows Mobile Devices USB 2.0 4-Port High Speed Hub. Includes a robust 12.5W 5V 2.5A power adapter. (US AC Wall Outlet Plug, 100-240V 50/60Hz) Hub enables connecting 4 additional USB devices. Forwards and backwards compatible with all USB 3.0, 2.0, or 1.1 host controllers and devices on Windows, Mac, and Linux/Unix computers at USB 2.0 speeds up to 480 Mbps. Transfer rates are device and USB host controller dependent. Fully plug and play, devices can be hot-swapped, supports USB over-current protection. Requires no driver installation (although individual devices may require drivers). Apple notes: Note that some devices such as the Apple SuperDrive look for Apple-specific signaling and will not work when connected through any USB hub. Hub supports the USB Battery Charging 1.1 Standard (BC 1.1) for unique charge and data sync functionality that most hubs do not have. Charge and sync only works with BC 1.1 compatible devices such as the Apple iPhone 5s, 5c, 5, iPad Retina, Air, Mini, (Apple 30 pin dock connector iPads will not charge), plus various Android and Windows devices are also supported. Because only some devices support BC 1.1, check compatibility list below before purchase. Master blue power LED. Sleek piano black glossy finish. Compact and portable design.