The USB3C-HUB2CR-WPD is a USB-C to two port 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 a USB device or another hub to the host USB-C computer, the USB-C female port can charge the host computer, the Micro SD and SD/MMC port allows you to access memory cards on the host PC. It can work on Macbook’s or Google’s Chromebook Pixel as well as other USB-C supported devices.Features• Supports USB-C Male, USB 3.0 Female, SD/MMC card, Micro SD card and USB-C Female interface. • Supports USB 3.0 Super Speed (5Gbps) transmission, backwards compatible with USB 2.0. • One of the two USB-A ports 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). • Multiple USB-C interfaces support plug and play, hot swap. • Supports SD/ SDHC/SDXC (up to 128 GB). • Supports SD v3.0 UHS-I (Writing speed max 70Mbps, Reading speed max 90Mbps). • Supports MultiMediaCard (MMC) specification.