USB 3.0 port supports to charge and transmit data to the USB device simultaneously
USB-C female charging port supports to charge for Macbook or Google new Chromebook Pixel and other USB-C supported devices This is a USB-C to two USB 3.0 hub with USB-C charging port and Micro SD and SD/MMC port. The USB 3.0 port allows you to connect USB device or another hub to the host USB-C computer, the USB-C female port can charge for the host computer, the Micro SD and SD/MMC port allows you to read information in the memory card on the host PC. It can work on Macbook or Google new Chromebook Pixel and other USB-C supported devices.
Note: the Micro SD and SD/MMC port cant work simultaneously, you can choose to use one of them according to your practical need ( it just depends on the type of your memory card)

Features:
Support SD/ SDHC/SDXC
Support USB-C input, USB 3.0 output
Support MultiMediaCard (MMC) specification
Support Micro SD/SDHC/SDXC (up to 128 GB)
Support SD v3.0 UHS-I (Writing speed max 70Mbps, Reading speed max 90Mbps)
Support USB 3.0 super speed (5Gbps) transmission, downward compatible with USB 2.0
Equipped with Card Reader
Multiple USB-C interfaces support plug and play, hot-swap
One of the two USB-A port supports BC 1.2, the power of this port can be up to 7.5W (5V/1.5A)
USB-C female port supplies power up to 60W (20V/3A)
USB 3.0 port supports to charge and transmit data to the USB device simultaneously
USB-C female charging port supports to charge for Macbook or Google new Chromebook Pixel and other USB-C supported devices