Connects up to 3 USB peripherals. The two USB-A hub ports and single USB-C data port accept USB peripherals, such as flash drives, mice, keyboards and printers. They support fast USB 3.1 data transfer rates and are backward compatible with USB 2.0 devices. Transmits crystal-clear HDMI video and digital audio. To send digital audio and Ultra HD video to a compatible television, projector or monitor, connect the corresponding port to the display using an HDMI cable. The HDMI port supports Ultra HD video resolutions. The VGA port supports high-definition resolutions. Charges the connected device. The USB-C power delivery port provides power and charging to a compliant device. Connect the devices AC wall charger to the USB-C PD port. When the wall charger is unplugged, the units PD 3.0 feature ensures all data and power connections remain stable.