??USB C Devices need Support DP ALT Mode?This is USB C to DVI 1080p Adapter is not compatible with All USB C laptop & all USB C smart phone. Please make sure your laptop is support Thunderbolt 3 or display output over USB C?OTHERWISE it is NOT COMPATIBLE. | ??Only Transmit Video?This DVI adapter is ONLY transmit image, NOT AUDIO. This item is NOT compatible with old DVI monitor like Apple Cinema HD Display (30-inch DVI), and this item is Single-link DVI, will NOT support Dual-link DVI. | ??Plug & Play, UHD Resolution ? This USB C to DVI adapter support Up to 1080P@60Hz, Backward compatible with 1080P@24Hz/50Hz/60Hz 720P,480P,576i,480i @50Hz/60Hz. Mirror or extend your screen of laptop/tablet/cellphone/desktop to HDTV, monitors, or projectors for a cinema-like visual feast. Support Netflix, YouTube, Amazon Prime, Hulu. | ??Compatible Model List?. It is compatible with MacBook Pro 2019/ 2018, iPad Pro 2018, Mac Mini 2018, iMac 2017, Surface Book 2, Surface Go, Dell XPS 15 & 13 & 12,Lenovo Yoga 920/ Yoga 910/ Yoga 900, HP Spectre x360 13 & 15 inch, Galaxy S22, Galaxy S8, Galaxy S9, Galaxy S10, S20, LG G5, LG G8, HTC 10 and other USB C device. You can get more compatible models at Product description page. It may take longer time to sync when use this adapter for smartphone | ??2 Years Warranty?You will received USB Type C to DVI I adapter*1 and 24 months worry free warranty .We aslo provide lifetime tech support for all CableCreation products. Please do not hesitate contact us, if you have any further question.