UNITEK 3 Ports USB 3.0 Hub with Multi-in-1 Card Reader with 5V/2A Adapter and USB 3.0 Cable for iMac, MacBook, MacBook Pro, MacBook Air, Mac Mini, Lenovo Yoga, or Any PC Expand to 3 USB 3.0 ports and 4-in-1 card reader with built-in surge protector. Compact design ideal for Mac Pro, iMac, MacBook Air, MacBook Pro, MacBook, and Mac mini Support SDHC, SDXC, Micro SD, Micro SDHC (UHS-I), Micro SDXC (UHS-I) and CF/MD/MMC/M2/MS; Up to 5 Gbps data transfer speed of this USB card reader, 10x times faster than USB 2.0 for quickly transferring large files, transferring high-resolution images and video recordings USB 3.0 Multi-in-1 Card Reader read one of the cards when cards sharing the same slot at the same time; Compatibility: Windows XP/Vista/7/8/8.1/10, Mac OS and Linus Backward compatibility with USB 1.1/2.0 devices, Plug and play. No driver needed, hot swapping; USB-powered (no external power or battery needed) 3 USB 3.0 (VIA VL812 chipset) ports and 4 card reader slots with sufficient 5V/2A power supply.