easily adds a 4k display to your thunderbolt 3 and usb-c displayport alt enabled ultrabook, laptop or desktop. note: the usb-c source connection must support displayport alternate mode transmission in order for the adapter s video connectors to pass video and audio supports uhd 4k@60hz (displayport) 4k@30hz (hdmi) and hd 1080p@60hz (dvi vga) resolutions. note: supports video output to one connected display at a time supports high quality 7.1ch audio through displayport or hdmi connection supports thunderbolt 3 technology and usb-c with displayport alternate mode (displayport alt) compact and lightweight designed to quickly add an additional display convenient to use at home, office or travel makes this the perfect add-on to your workstation bus-powered for extra portability, no need to take an external power adapter while on the go convenient plug and play operation, no driver installation required chipset: vl100 ps171 ps8348b it6516 it6561