Librem 13 has two USB 3.0 ports (one is type C) and one USB-2.0. Which one is the USB-3.0? The 3.0 port is supposed to be blue - they are both black.
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The one with “SS” in the USB logo is the 3.0 port. The blue color of USB 3.0 ports are a recommendation instead of a rule from the USB Group.
Manufacturers are recommended to distinguish USB 3.0 connectors from their USB 2.0 counterparts by blue color-coding of the Standard-A receptacles and plugs,[2] and by the initials SS.
Source: Wikipedia
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The right one is usb3, the left one usb2.
Unfortunately the wiki Wiki does not list the specs and the port locations 
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