Can someone explain usb specs for me? totally confused.

Discussion in 'Motherboards' started by boing, Dec 6, 2017.

  1. boing

    boing Senior member

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    I'm having a look at this board amongst others and wanted to compare usb connections but they're baffling to me.

    https://www.msi.com/Motherboard/X399-SLI-PLUS/Specification

    The text below is what's listed, I understand the difference between gen1/gen2 and connector types but is this saying 3 x usb 3.1 and 12 x usb 3.0? because Anandtechs own review says 3 usb 3.1 and 4 usb 3.0.

    https://www.anandtech.com/show/11685/amd-threadripper-x399-motherboards/10

    Could someone clarify for me please?

    • ASMedia® ASM3142 Chipset
    - 1 x USB 3.1 Gen2 (SuperSpeed USB 10Gbps) Type-C port on the back panel
    - 1 x USB 3.1 Gen2 (SuperSpeed USB 10Gbps) Type-A port on the back panel

    • AMD® X399 Chipset
    - 1 x USB 3.1 Gen2 (SuperSpeed USB 10Gbps) Type-C port through the internal USB connector
    - 4 x USB 3.1 Gen1 (SuperSpeed USB) ports available through the internal USB connectors
    - 6 x USB 2.0 (High-speed USB) ports (2 Type-A ports on the back panel, 4 ports available through the internal USB connectors)

    AMD® CPU
    - 8 x USB 3.1 Gen1 (SuperSpeed USB) Type-A ports on the back panel
     
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  3. Mr Evil

    Mr Evil Senior member

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    That must be a mistake in Anandtech's review. It's clear from the photos that there are 8 USB 3.0* ports on the rear panel alone.

    * For the benefit of anyone reading this that doesn't know, USB 3.1 Gen 1 is exactly the same as USB 3.0, just renamed to try and confuse customers into thinking it's the same as the faster USB 3.1 Gen 2.
     
  4. boing

    boing Senior member

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    OK thanks, I thought I was just being a tool....
     
  5. Topweasel

    Topweasel Diamond Member

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    The quick eye test is if properly or semi properly color coded.

    Black is USB 2
    Blue is USB 3.0
    Red is USB 3.1 Gen 1
    Type C is USB 3.1 Gen 2

    For front face connectors

    The two IDE looking connectors under SATA connectors are USB3
    The One dongle insert looking connector next to the reset switch is the 3.1 Gen 2 connector
    The two 9 pin connectors next to the USB 3.1 Gen 2, that looks like an audio header is USB 2
     
  6. boing

    boing Senior member

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    Great, many thanks.