USB (Universal Serial Bus)-C 2 port USB (Universal Serial Bus) 3.0 hub with USB (Universal Serial Bus)-C charging port & Micro SD & SD/MMC port. The USB (Universal Serial Bus) 3.0 ports allow you to connect USB (Universal Serial Bus) devices or another hub to the host USB (Universal Serial Bus)-C computer the USB (Universal Serial Bus)-C female port can charge or power the host computer whilst using the hub the Micro SD & SD/MMC port means that you can access memory cards on the host PC. ideal to be used with Macbooks or Googles Chromebook Pixel as well as other USB (Universal Serial Bus)-C supported devices Features USB (Universal Serial Bus)-C 2 Port USB (Universal Serial Bus) Hub with 2x USB (Universal Serial Bus) 3.0 Female SD/MMC card slot Micro SD card slot & USB (Universal Serial Bus)-C Female power connector Supports USB (Universal Serial Bus) 3.0 Super Speed (5 Gbps) transmission backwards compatible with USB (Universal Serial Bus) 2.0 One of the two USB (Universal Serial Bus)-A ports supports BC 1.2 battery charging max 7.5W (5V/1.5A) USB (Universal Serial Bus)-C female can be used to charge or power the host computer max 60W (20V/3A) Multiple USB (Universal Serial Bus)-C interfaces support plug & play hot swap Supports SD/ SDHC/SDXC (up to 128 GB) Support SD v 3.0 UHS-I (Writing speed max 70 Mbps Reading speed max 90 Mbps) Support Multi Media Card (MMC) specification