coupon code only for this produce:HDM0011 HDM0014 (only avaible in-app) 4K HD Two screens at the same time Dual HD interface output at the same time.4K HD on the same screen smoothly.Aluminum alloy shell has good heat diipation. Wide Compatibility: Compatible with Mac OS, Windows, Linux, Android system with USB-C port which supports "DisplayPort Alternate Mode" (not all USB-C ports/systems support Alternate Mode functionality). Compatible with MacBook Pro 2016-2020, MacBook Air 2018-2020, iPad Pro 2018 2020. Plug & Play with Premium Quality: Instantly extend your laptop, tablet, or phones USB-C port into dual HDMI ports, no driver/firmware needed. Covered by premium aluminum alloy case and engineered with the best chipset. Wavlink dual HDMI converter provides a sleek and sturdy solution for extending your laptop screen. This adapter is also equipped with a safety system that provides surge protection, overload protection and overheat (High temperature) protection. Mirror and Extend Mode: Type C HDMI Adapter is a good choice for Windows users as it supports three different modes under Windows OS. You can mirror your laptop or extend the screen to two identical or distinct external displays (AAA, ABB, ABC), while it will not allow for split screen under Mac OS due to the limit of Mac OS (supports AAA and ABB only). Tablets / phones can mirror one screen only. Dual 4K Display: USB C to Dual HDMI Adapter allows you to display the content of your laptop to 2 monitors at the same time at 3840*2160