Turn your phone into a PC-like experience and replace for Nintendo Switch. Our USB-C to HDMI+USB 3.0+USB 2.0+Power Delivery Port Adaptor let you connect your Samsung Galaxy S21/S20/S10/S9/S8, Note 10/9 to a monitor with keyboard and mouse for a desktop experience. So you can turn any place into a workplace with your phone. NOTE: Samsung DeX function support Samsung Galaxy S21/S20/S10/S9/S8/Note 10/9/ Tab S7/S6/S5/S4 ONLY!(please ensure introduce external power to the adapter via the usb type c male port(power delivery), or it won't work.) Great alternative to the Samsung branded DeX Station / DeX Pad.(As Samsung DeX mode limited its resolution max 1080P only, that our adapter max resolution 4K @30Hz can be achieved while working with other devices like MacBook/MacBook Pro...) Enjoy a desktop experience. Use your phone to connect with this adapter give you what you want from a desktop experience: a big screen, a full-size keyboard & a mouse. Some things are just easier on a desktop, like sending email, enter text, copying & pasting between apps. All these can be done with a click of a mouse or a punch of a key. Mirror & DeX mode switch: 1, in DeX mode, please go to the "setting" ? "connect", then you will see the options of "HDMI mode/ DeX mode", click this button, it will turn to "Mirror" Mode. 2, in Mirror mode, please slip down from the top screen of your phone, then you will see the Samsung DeX Mode, click it, then it will trun to "DeX" mode. Important Note: Note: Must connect charger cable to adapter to support DEX MODE. The USB3.0 Port max output current is 0.9A only, that it can't connect high power consumption devices, such as External Hard Driver/CD-ROM/DVD-ROM. And we don't recommend use the USB3.0 port for charging too, as the charging speed will be slow.