Samsung DeX ("Desktop eXperience") is an accessory sold first with Samsung Galaxy S8 and S8+ devices that extends the functionality to allow desktop-like functionality by connecting a keyboard, mouse, and monitor.
The dock provides a USB-C port, ethernet, HDMI 2.0 output and two USB 2.0 ports. Samsung also announced "Linux on Galaxy", which allows use of a compatible Linux distribution rather than the default Android OS giving full personal computer capabilities. The DeX Desktop can also be accessed with third party accessories like the Melopow Dock. On 9 August 2018, Samsung announced that DeX will be natively supported by the Note 9 and the Tab S4, with only a HDMI connection from the device to an external display being necessary, facilitated by a USB-C to HDMI adapter. Whilst connected to a display, the device itself can function as a touchpad or continue being used in its usual fashion whilst DeX is operating.