Front Panel:

image

My nomenclature, from left to right: F1 – F4

Rear Panel:

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My nomenclature, following a U-shape from top left to top right: R1 – R7

Type (according to XPS 8930 manual):

 ID   Description                 Speed    Connected 
 --   --------------------------  -------  ----------
 F1   USB 3.1 Gen 1 Type C         5 Gbps  
 F2   USB 3.1 Gen 1                5 Gbps
 F3   USB 3.1 Gen 1                5 Gbps
 F4   USB 3.1 Gen 1                5 Gbps

 R1   USB 2.0                    480 Mbps  Keyboard
 R2   USB 2.0                    480 Mbps  Mouse
 R3   USB 3.1 Gen 2 Type C        10 Gpbs
 R4   USB 3.1 Gen 2               10 Gpbs  Scarlett 6i6
 R5   USB 3.1 Gen 1                5 Gbps
 R6   USB 3.1 Gen 1                5 Gbps
 R7   USB 3.1 Gen 1                5 Gbps  MIDISport 2x2

Here is a report from USB Device Tree Viewer 3.3.6:

image

Quite by accident I seem to have connected the Focusrite Scarlett 6i6 to its own dedicated high-speed USB hub, which I’m guessing is optimal.

However, we should remember that the USB port on the Scarlett is only USB 2.0. So we’re hopefully gaining some isolation or immunity from interference, but no throughput gains. Chances are we may have another device that could leverage the 10 Gbps speeds…