USB C to Dual HDMI 4K Adapter, USB Type C (Compatible Thunderbolt 3) to 2 HDMI Adapter Compatible with MacBook Pro 2020/2019/2018/2017,XPS 13/Surface Book 2,Chromebook Pixel, Yoga 710

Product description matters need attention Please make sure your PC supports Thunderbolt 3 or display output modeDP ALT mode. OTHERWISE, it is NOT COMPATIBLE. If you don't know if your device is compatible with our products, please send us a message via Amazon and we will help you For macOS systems, it will NOT support Extend Mode, two HDMI monitors will show the same image. As the third picture shows. If you want to use extended mode on the macOS system, you can use the Win10 system, or you can consider products ASIN B07799WBKW (CD0502) & ASIN B019Q652AG (CD0101).

Please be informed that CD0502 is ONLY compatible with Thunderbolt 3 laptops, it is also NOT compatible with MacBook12 due to this laptop being USB-C Gen 1 NOT Thunderbolt. In order to enjoy the 4K high resolution, please make sure to use HDMI 2.0 cable. Supports resolution up to 4k@30Hz, but we recommend you make sure your monitor/TV could supply the corresponding output. If the resolution of your laptop is higher than the external monitor.
For windows: Windows Menu Setting Display Advanced Display Settings, set your laptop's resolution same as or lower the resolution of external monitor.
For macOS: Left-upper Apple iconSystem PreferencesDisplaysMirror displays. Then your HDMI monitor would mirror your Mac. However, here you have two choices. One is "Optimize For" your built-in Retina Display, the other is "Optimize For" your HDMI monitor. You can choose which one you like. For Windows system laptop, if the external monitor could not work, please update the BIOS and graphic card driver from laptop official website. How to Set Dual Display on Windows Dual mode under
Windows system: Mirror
Mode: laptop shows "A" + 2 extension displays show "A" is available
Extend Mode: 1 laptop shows "A" + 2 extension displays show A is available 2laptop shows "A" + 2 extension displays show B is available 3 laptop shows "A" + 1 extension display shows B + 1 extension display shows "C" is available How to Set Dual Display on MacBook Dual mode under macOS system: Mirror
Mode: laptop shows "A" + 2 extension displays show "A" is available
Extend Mode: 1 laptop shows "A" + 2 extension displays show A is available 2laptop shows "A" + 2 extension displays show B is available 3 laptop shows "A" + 1 extension display shows B + 1 extension display shows "C" is NOT AVAILABLE High Quality Material Aluminum alloy case Durable cotton braided cable Dual 4K Monitor You will get two monitors with HDMI at 4K@30Hz Compact & Portable Easy to carry around, perfect for business travel or home office.
Compatible devices (not full list): * MacBook Pro 2019 / 2018 / 2017 / 2016 / Mac Pro / iPad Pro * iMac (Mid 2017) and newer / iMac Pro * Mac Mini (Late 2018) and newer * MacBook (Early 2015) and newer / MacBook Air (Late 2018) and newer * New Chromebook Pixel / Pixelbook 2-in-1 / Pixel Slate 2-in-1 / Chromebook Pixel (2015) * XPS 15 / 13 / 12 * EliteBook Folio G1 / Spectre 13 laptop / Spectre x360 2-in-1 * Thinkpad E580 / T470 / T480 / X1 Carbon (2017) / A485 / A285 / E485 / E585 / Yoga 900 / 910 / 920 * Asus Zen AIO All-in-One PC * Surface Book 2/surface go * Galaxy S8 / S8+ / Note8 / S9 / S9+ / Note9 / S10 /S10e / S10+ / Note 10 and Tab S4. * LG G5 / G7 / G7+ / Q8 / V20 / V30 /V30+ / V35 / V35+ / V40 / Exodus 1 * HTC 10 / HTC U Ultra / U11+ / HTC U12+ * Mate 10 / Mate 10 Pro / Mate 20 / Mate 20 Pro / Mate X / P20 / P20 Pro / P30 / P30 Pro / Honor Note 10 / Honor View 20 Please confirm whether it is compatible with your device before the purchase