TeckNet Aluminum USB 3.0 4 Ports Clamp Hub Secure Clamp Grip - Conveniently clamps to your monitor screen for easy access to 4 USB 3.0 ports LED Status Indicator Unibody aluminum exterior is sleek yet durable, effectively resisting scratches and wear from repeated plugging in. Super-speed USB3.0 ports support data transfer rates of up to 5Gbps; Backwards Compatible with USB 2.0 Built-in surge protection keeps your devices and data safe and supports hot swapping. No drivers required for Windows 8 / 7 / Vista / XP or Mac OS X 10.2 and above. Plug-and-Play and Hot-Swap compatible. Do Not support the old iMac System: A1312