Kramer’s ADC?U31C/M2 is a USB 3.1 Type?C to multi?port adapter cable, supporting 4K@30Hz resolution on the HDMI video output to any HDMI display or projector. A USB 3.0 port is included to charge/sync your smartphone or connect other legacy devices such as an external USB hard drive or hub. The adapter also supports fast charging of your laptop thanks to pass?through power on the female PD (power delivery) USB?C port.