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Enabling USB Type C (Thunderbolt) socket

Enabling USB Type C (Thunderbolt) socket
« on: May 02, 2021, 01:29:25 pm »
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?

Aorus GA-Z270X-Gaming 7.  Intel Core i7-6700K 4.0GHz Quad-Core Processor.  G.SKILL Ripjaws DDR4 3200 C14 4 x 8GB. NZXT Phantom 630 (Gunmetal) ATX Full Tower Case. NZXT Kraken X62 Rev 2 98.2 CFM Liquid CPU Cooler. EVGA SuperNOVA P2 850W 80+ Platinum ATX PSU.  Samsung 950 PRO 256GB M.2-2280 SSD.


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Re: Enabling USB Type C (Thunderbolt) socket
« Reply #1 on: May 08, 2021, 02:09:56 pm »
Have you looked at BIOS > Peripherals > Thunderbolt Configuration?

Maybe the type c cable you purchased is not compatible?
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