The following table
lists ports and connectors available on XPS 13 7390.
One headset (headphone and microphone combo) port
DisplayPort (DP) 1.2 support through a USB Type-C connector
One microSD-card slot
DC-IN through a USB Type-C connector
One security-cable slot (wedge-shaped)
One M.2 2230/2280 slot for solid-state drive