[Q] USB OTG at USB 3.1 G1 (SuperSpeed á la 5Gb/s)

lagittaja

Senior Member
Jan 3, 2011
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Finland
tl;dr As per title, does it work for you?

I received a new OTG cable I ordered, a Type C to Type A USB 3.0 OTG cable and for me OTG seems to be working in USB 2.0 speeds only.
In Settings > USB connection the "Fast file transfers" option is greyed out so at least according to that it's in USB 2.0 mode right now.
I tested it with my Kingston DT R3.0 thumb drive and I only got sequential read/write speeds of 22.5/15.6MB/s when transferring data to/from my HTC 10.
HTC 10's internal storage is capable of ~ 160/110MB/s sequantial read/write respectively.
And the Kingston thumb drive is capable of 200/50MB/s seq. read/write respectively.
Hence it would be nice to be able to take advantage of the faster transfers..

So, what gives?
a) HTC 10 doesn't support SuperSpeed in host mode
b) bad cable

Regarding b, I'd rather not dissect this cable. It was cheap but it's nice quality. And I need it..
The connectors are both of correct versions so that's not the problem and judging from the thickness and stiffness of the cable there's a bunch of copper running inside so all of the pins should be connected.