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Discussing USB-C and DisplayPort 1.4 on recent motherboards

Discussing USB-C and DisplayPort 1.4 on recent motherboards

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kpiscrazy
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05-21-2016, 11:36 PM
#1
I've observed that several of the latest X870E motherboards include USB-C ports featuring DP connections. For instance, the ProArt X870E-CREATOR WIFI offers two such ports. I'm not clear on the exact functionality—does it still rely on GPU-generated video, or is a CPU with an integrated GPU required? My interest lies in compatibility with devices like a Huion Pen Display. Most models provide two connection methods: direct USB-C to USB-C, often used with laptops, or a USB-C to 3-way dongle setup (HDMI, one USB-A for data, another for power). The 3-way dongle is the one I currently use, but I'd prefer a USB-C cable instead. Would it be possible for any USB-C cable to work, or should there be specific protocol requirements?
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K
kpiscrazy
05-21-2016, 11:36 PM #1

I've observed that several of the latest X870E motherboards include USB-C ports featuring DP connections. For instance, the ProArt X870E-CREATOR WIFI offers two such ports. I'm not clear on the exact functionality—does it still rely on GPU-generated video, or is a CPU with an integrated GPU required? My interest lies in compatibility with devices like a Huion Pen Display. Most models provide two connection methods: direct USB-C to USB-C, often used with laptops, or a USB-C to 3-way dongle setup (HDMI, one USB-A for data, another for power). The 3-way dongle is the one I currently use, but I'd prefer a USB-C cable instead. Would it be possible for any USB-C cable to work, or should there be specific protocol requirements?

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A
ArisV
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05-22-2016, 12:11 AM
#2
They feature USB-C with DP-alt for the iGPU. The X870E supports DP-in similar to earlier models, enabling USB4 usage with a dGPU connected. To show this isn't always true, the Pro Art model with DP-in for the type-C can pass through a dGPU: Amazon.com lists the ASUS ProArt X570-Creator WiFi AMD X570S Ryzen AM4 ATX Content Creation Motherboard (PCIe 4.0, Passive PCH Cooling, 2xThunderbolt 4 Type-C Ports, 10 Gb & 2.5 Gb LAN, WiFi 6E, 3X M.2 Slots, Creator Hub). In this setup, you can display output from the GPU via the USB-C port using DP-in and Thunderbolt 4.
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ArisV
05-22-2016, 12:11 AM #2

They feature USB-C with DP-alt for the iGPU. The X870E supports DP-in similar to earlier models, enabling USB4 usage with a dGPU connected. To show this isn't always true, the Pro Art model with DP-in for the type-C can pass through a dGPU: Amazon.com lists the ASUS ProArt X570-Creator WiFi AMD X570S Ryzen AM4 ATX Content Creation Motherboard (PCIe 4.0, Passive PCH Cooling, 2xThunderbolt 4 Type-C Ports, 10 Gb & 2.5 Gb LAN, WiFi 6E, 3X M.2 Slots, Creator Hub). In this setup, you can display output from the GPU via the USB-C port using DP-in and Thunderbolt 4.

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Sr_Pipo
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05-22-2016, 04:43 AM
#3
The guide mentions linking the discrete GPU's DP-out to the motherboard's DP-in. Using the USB-C port as the DP-out is also recommended.
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Sr_Pipo
05-22-2016, 04:43 AM #3

The guide mentions linking the discrete GPU's DP-out to the motherboard's DP-in. Using the USB-C port as the DP-out is also recommended.

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FCRemedy
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05-22-2016, 05:31 AM
#4
It's worth noting that the x870e model includes this capability, which has become common in recent Pro Art iterations and is also available on the Intel side.
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FCRemedy
05-22-2016, 05:31 AM #4

It's worth noting that the x870e model includes this capability, which has become common in recent Pro Art iterations and is also available on the Intel side.

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Milchbar
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05-22-2016, 09:29 AM
#5
USB-C connections behave oddly because not all cables follow the same standards. It’s tough to test them with the type-c monitors I don’t have, as my motherboard and spare 7900 XT have mixed type-c outputs—some USB without DP-alt, others with DP-alt.
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M
Milchbar
05-22-2016, 09:29 AM #5

USB-C connections behave oddly because not all cables follow the same standards. It’s tough to test them with the type-c monitors I don’t have, as my motherboard and spare 7900 XT have mixed type-c outputs—some USB without DP-alt, others with DP-alt.

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XxGrenidierXx
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05-23-2016, 09:34 PM
#6
On desktops, this setup can be shown using block diagrams. Your Type C/Thunderbolt connections are either sent directly to iGPU outputs (like the My X670E Taichi) or routed through a DP-in port that forwards any input source via the Type C/Thunderbolt connection (such as the ProArt board).
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XxGrenidierXx
05-23-2016, 09:34 PM #6

On desktops, this setup can be shown using block diagrams. Your Type C/Thunderbolt connections are either sent directly to iGPU outputs (like the My X670E Taichi) or routed through a DP-in port that forwards any input source via the Type C/Thunderbolt connection (such as the ProArt board).

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Cytoph
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05-24-2016, 02:04 AM
#7
I believe it would be great if we could achieve this directly through PCIe instead of using an external connection.
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Cytoph
05-24-2016, 02:04 AM #7

I believe it would be great if we could achieve this directly through PCIe instead of using an external connection.

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CoconutSlayer
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05-24-2016, 09:40 AM
#8
It's unclear why this isn't available.
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CoconutSlayer
05-24-2016, 09:40 AM #8

It's unclear why this isn't available.

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BananaBob9
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05-27-2016, 11:45 PM
#9
I don't think cards are designed to be able to pass displayout over PCIe, so that might require a special controller, then the motherboard would have to be able to receive that signal as displayport and pass it over type-c like this board doesn externally. Its definitely something I'd pay extra money for to have, even if my monitor doesn't have a type-c input right now. A single cable solution for my monitor to provide USB, DP, and power would be AMAZING. Plenty of monitors fit within a 100W power budget as is, and plenty of motherboards have type-c PD capability, especially with the extra room people generally spec into their power supplies.
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B
BananaBob9
05-27-2016, 11:45 PM #9

I don't think cards are designed to be able to pass displayout over PCIe, so that might require a special controller, then the motherboard would have to be able to receive that signal as displayport and pass it over type-c like this board doesn externally. Its definitely something I'd pay extra money for to have, even if my monitor doesn't have a type-c input right now. A single cable solution for my monitor to provide USB, DP, and power would be AMAZING. Plenty of monitors fit within a 100W power budget as is, and plenty of motherboards have type-c PD capability, especially with the extra room people generally spec into their power supplies.

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