About this item 4 in 1 USB-C HUB - This USB C to DVI/VGA/HDMI adapter allows USB C enabled devices( such as Mac-Book Pro, Chromebook Pixel) to connect with HDMI/VGA/DVI-equipped devices( such as monitor, projector, TV) for multiple monitors, extending working space with mirroring or extending display. NOTE: VGA port can work simultaneously with HDMI or DVI port with maximum resolution of 1920 x 1080P, and two external monitors will show the same image. HDMI & DVI ports can't work simultaneously.