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Hi, The two USB C ports on my Latitude 7390 2 in 1 have started misbehaving. The second port (closest to the front as I face the screen on the left hand side) just isn't working at all. I have plugged in the power cable and a USB C mini docking hub and nothing happens - no charge or indication of connection at all. I'm also noticing that the laptop stops charging to the first port (next to the other one but closer to the back) occasionally, even though there is power to the cable. I have to disconnect the the adapter from the AC cable and plug it back in to restore mains power, but I am worried that this might by the start of a bigger problem. I've marked the two ports on this picture. I use 1. for AC power. I haven't really used port 2, except occasionally for AC when I just plug in without really looking. [IMAGE]Ports indicated 1 & 2. I use one for AC power.    
Latitude 7390 2 in 1 - One USB C port not working/charging