Ultra-thin high-quality aluminum 2-port USB 3.0 hub with SD or TF card reader combination It adds 2 USB 3.0 ports and SD or TF card reader slot to the front of for iMac. No longer need to twist the cable to reach the port vertically High speed transmission USB 3.0 data transfer rate up to 5Gbps With LED indicator, show you the working state Ergonomic angle, easy access to USB port and additional 2 slot card readers No software or complicated installation process required, plug and play The slim design saves valuable desktop space for you Specification: Model: HC413 Interface: USB 3.0x2 or Type-C or TF or SD USB3.0: backward compatible with USB 2.0 and 1.1 Transmission rate: 5Gbps Support for SD, SDXC (up to 2TB), SDHC, TF, Micro-SDXC, Micro-SDHC card System requirements: For Mac OS X 10.6 and higher for Windows 98SE or ME or 2000 or XP or for Vista or 7 or 8 or 10 for Linux 2.4 or higher Material: aluminum alloy Size: 108x34x11mm