Featuring a clean, compact design, this USB 2.0 hub enables two devices to share a single available USB port with full USB 2.0 compatibility and performance. Hub uses a high quality NEC chipset. Plugable USB 2.0 2-Port High Speed Hub. USB bus powered, requires no additional AC power. This hub is intended for low or self powered devices. Example: Connecting two external hard drives will result in one or both failing to operate. USB HUB IS NOT FOR CHARGING. Functions as a USB hub only and will NOT charge mobile or any other devices. No special charging functionality for charging an iPad, iPhone, or other tablet and smartphone devices with or without a PC connected. Not BC 1.1 / 1.2 compatible. Hub enables connecting 2 additional USB devices to a single USB port. Works with USB 3.0, 2.0, or 1.1 host controllers and devices on Windows, Mac, and Linux/Unix computers at USB 2.0 speeds. Transfer rates are device and USB host controller dependent. Fully plug and play, devices can be hot-plugged. Requires no driver installation (although individual devices may require drivers). Sleek piano black finish. Ultra compact, travel friendly design with a built-in 12-inch USB cable. Apple notes: Note that sume Apple devices such as the Apple SuperDrive look for Apple-specific signaling and will not work when connected through any USB hub.