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    XPS 13 9343 - SD slot capabilities?

    Discussion in 'Dell XPS and Studio XPS' started by RPToday, Jun 16, 2015.

  1. RPToday

    RPToday Newbie

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    I recently 'chatted' with a Dell CSR to find out if the SD slot on the XP 13 (9343) supports the UHS-II bus interface. After a long pause, he came back with 'yes, it supports UHS', which really didn't answer the question, as there is a UHS-1 bus architecture. The difference is critical, as UHS-II is 3x times faster (or more) than UHS.-1.

    As I don't fully trust his answer, and can't find the info anywhere else online, do any of you XPS 13 enthusiasts know the answer?
     
    RPToday, Jun 16, 2015
    #1
  2. kent1146

    kent1146 Notebook Prophet

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    Look on ifixit for the teardown of this laptop. You'll find the exact part number used for the SD card reader.

    Turns out to be a realtek chip, that looks like it was only used in some newer laptops and AIO computers. From there, search for the capabilities of that controller chip, to see if it supports uhs-2.
     
    kent1146, Jun 16, 2015
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  3. davidkwan

    davidkwan Notebook Consultant

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    hey the SD slot is in good speed. I'm using the Lexar 1000x 128GB SD card and it reach the 150MB read and 79MB write (Crystal DiskMark) as stated from some testing review. The card is UHS-II standard. I have try running the same benchmark with a Kingston USB3.0 card reader which compatible with UHS-II card, the speed is 15X MB read and 90MB write
     
    davidkwan, Jul 23, 2015
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  4. RPToday

    RPToday Newbie

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    Thanks David & Kent - I had an obstructed look at the innards of the SD reader on ifixit and it looks like it lacks the extra pins required for UHS II. Too bad - and I hope that I'm proven wrong!
     
    RPToday, Jul 23, 2015
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  5. RadioKWO

    RadioKWO Notebook Enthusiast

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    Mine 9343 laptop came with Realtek RTS5249 Card Reader. This card is supposed to support the UHS-II iterface. However I am not sure if the driver available through Dell website (v.6.3.9600.21261) really supports the UHS-II mode. I do not have any SD card that supports this mode so I can't check it.
     
    RadioKWO, Jul 25, 2015
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  6. davidkwan

    davidkwan Notebook Consultant

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    davidkwan, Jul 25, 2015
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