Warm Tips on Dragon Touch 4K Portable Monitor: 1. Phones that do not have a full-featured Type C port require an adapter to connect ( iPhone needs lightning to HDMI adapter). 2. Please check if the Type-C port of your laptop is a full-featured Type C port, If not, it would not work with S1 pro portable monitor.（You can connect the monitor with HDMI Cable and Type-C power supply cable.） 3. When connecting a laptop, in order to avoid the screen stop working due to insufficient power supply of the S1 Pro (at least the voltage reaches 5V and the current reaches 3A), you need to use the built-in charging head to connect to the external power supply. 4. To prevent the S1 Pro from shutting down while working If the brightness and volume are adjusted above 70%, connect the S1 Pro to an external power source. 5. Adapters are required for IOS devices, see the manual for details. 6. Make sure that the laptop supports the tpye-c full-featured interface, otherwise the full-featured interface cannot be used. When using, power on the portable screen first, and then connect the portable screen to the computer with a type-c cable. 7. Applicable models for HP notebooks: EliteBook G1 for HP Notebook, EliteBook Folio G1, Omen 4 Pro,Pavilion X2, HP Spetre 13/Enw 13. 8. Volume and brightness can't be adjusted simultaneously. Please change one setting at one time. 9.Use the scroll keys if you want to set the sound and brightness. Scroll down in the main interface to activate the volume menu，Scroll down in the main interface to activate the volume menu. 10. If you have any questions about device compatibility and connecting, please feel free to contact Dragon Touch professional team for getting the best solution. All the Best! 178° Wide Viewing Angles This portable computer monitor uses an advanced IPS panel with low blue light eye care technology that minimizes blue light to reduce eye strain. The wide 178° horizontal view allows for a clear view from every angle for the best possible picture quality. Watch It Your Way Whether you are watching a movie, or enjoying a game or simply scrolling through images, VESA- compatible screw holes allow you to easily mount the Dragon Touch USB Type-C monitor to a compatible monitor arm or stand. Landscape or Portrait Mode Our portable laptop monitor suport two way for portrait or landscape, it makes us to get things done easily. It delivers you a awesome viewing experience when viewing websites or papers. Just watch your way and enjoy it! Dual Stereo Speakers Built-in dual speakers deliver booming sound with crystal-clear audio quality and bring an enticing home theater experience to the comforts of your home. Also, you can add your own speaker with our portable screen for a better sound via 3.5mm audio input. Smart Cover & Stable Stand The Dragon Touch portable display comes with a scratch-proof magnetic cover made of durable PU leather that not only provides comprehensive protection to the monitor but also offer stable stand for better viewing. Portable Gaming Monitor Compatible with PC, PS3, PS4, XBOX ONE, or Nintendo Switch, and other game devices, allows you to game whenever and wherever you go, 15.6" 4K IPS panel, 60Hz fresh rate give you seamless visuals and immersive gaming experiences.