Enabling USB Type C (Thunderbolt) socket


  1. Posts : 44
    Windows 10 Pro build 19043 64 bit
       #1

    Enabling USB Type C (Thunderbolt) socket


    I have a desktop using a GA-Z270X-Gaming 7 1151 7th gen ddr4 rgb fusion motherboard, which includes a USB Type C port also described as a Thunderbolt 3 port.

    I've just purchased a new HP Z38C monitor, which includes some USB ports, however, to use them a cable must be plugged into the Type C inbound socket on the monitor. This monitor also provides video via DisplayPort, HDMI or USB Type C. Currently, I'm using a DisplayPort cable.

    According to the monitor instructions, it suggests using a Type C to Type A cable to connect the monitor to the desktop in order to enable the 3 available Type A ports on the monitor.

    Because the motherboard has a Type C port I thought it would be better to use this to connect the monitor, so I purchased a 3m Type C to Type C cable.

    However, when this cable is connected, the USB ports on the monitor are still not working. A short Type C to Type A cable came with the monitor so I plugged that in and the USB ports on the monitor do work. With this cable, I'm not using the Type C port on the motherboard.

    When the new Type C to Type C cable is plugged in the monitor control panel shows "USB-C Video Connected" and when the cable is disconnected, the monitor shows "Inactive", so clearly the monitor is detected a Type C cable is plugged in.

    If I try to select USB-C Video as the video input on the monitor, it doesn't find a signal.

    Am I wrong to expect the Type C to Type C cable to "just work"? Why aren't the monitor USB Type A ports working when using the Type C to Type C cable to connect the monitor to the desktop? Same with the video signal? It would appear that the Type C port on the motherboard isn't working!

    I have installed the latest Gigabyte Thunderbolt driver, but this didn't make any difference.

    I "suspect" I could purchase a Type C female to Type A male adapter and plug the new cable into a standard USB Type A connector on the motherboard, but I would much prefer to use the Type C port if possible.

    Do I need to do something to turn "on" the Type C port and pass video through it or simply use it to allow the USB ports on the monitor to work?

    Thanks.
      My Computer


  2. Posts : 17,272
    Windows 11 Pro
       #2

    Did you read this in the monitor manual?

    NOTE: Except for USB Type-C input, the monitor automatically determines which inputs have valid
    video signals. You must manually select USB Type-C input. To select any input, including USB Type-C,
    open the OSD menu and select Input.

    Did you download the Thunderbolt driver from Gigabyte website? I see you say you installed a driver, but was it the one from Gigabyte website?
      My Computer


  3. Posts : 17,272
    Windows 11 Pro
       #3

    Also, on page 61 of the motherboard user manual it says there is a Thunderbolt Configuration menu in the BIOS settings. Have you looked there?
      My Computer


  4. Posts : 44
    Windows 10 Pro build 19043 64 bit
    Thread Starter
       #4

    Hi NavyLCDR,

    Thanks for responding so quickly.

    Yes, yes and yes!

    Yes, I'm aware that the monitor doesn't auto detect the Type C connection and so selected that from the monitor controls. While it shows a Type C cable is connected, it doesn't find a signal when selected.

    Yes, I downloaded the latest Thunderbolt driver from the Gigabyte website for my motherboard.

    Yes, I've gone into BIOS, but there is no such thunderbolt menu. There is a USB menu, but it doesn't say anything about thunderbolt! I have upgraded my motherboard to the latest available BIOS, which is F8 according to the Gigabyte BIOS tool.

    It does feel like I need to do something to switch on the Type C port on the motherboard!

    I managed to use the supplied HP Type C to Type C cable to connect the monitor to the desktop. It wasn't easy due to its short length but I got the same results as with the new 3m cable, so it would appear it isn't a cable issue as two different cables have now failed to work.
      My Computer


  5. Posts : 17,272
    Windows 11 Pro
       #5

    What CPU and GPU do you have installed?
      My Computer


  6. Posts : 44
    Windows 10 Pro build 19043 64 bit
    Thread Starter
       #6

    The processor is an Intel Core i7-7700k 4.2 Ghz Quad Core 8mb cache (Kaby Lake).

    I haven't got a dedicated GPU installed as the onboard Intel video supplied with the Gigabyte motherboard is more than adequate for my requirements. My desktop is a work PC and is not used for gaming.

    Not that it matters to my setup, but I would assume if I did have a GPU then the cable would need to plug into that, rather than into the motherboard?
      My Computer


  7. Posts : 17,272
    Windows 11 Pro
       #7

    I am out of resources. I don't have USB-C video capability so I can only offer the very basic advice. If someone else doesn't come on here, maybe check on gigabyte's support forum?
      My Computer


  8. Posts : 44
    Windows 10 Pro build 19043 64 bit
    Thread Starter
       #8

    Thanks anyway.

    I have already posted the question on the Gigabyte forum and raised a support ticket with Gigabyte technical support in the hope they will come back to me.

    Unfortunately I don't have any devices that use Type C connections (except the new monitor) so can't plug anything into the motherboard to determine if the Type C port is actually doing anything, but it would appear not so far.
      My Computer


 

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