Can the pro display XDR also be connected with a normal USB-c cable?

The NVIDIA GEFORCE RTX 2080Ti doesn't support Thunderbolt 3, but does support 7680x4320, so should work with the XDR (6016x3384).

https://www.nvidia.com/en-us/geforce/graphics-cards/rtx-2080-ti/

It will not work with a Thunderbolt 3 only cable (Thunderbolt icon on the connectors).

The Apple 0.8m cable (no Thunderbolt icons on the connectors) works with both Thunderbolt 3 and USB because it is short enough to not need special Thunderbolt drivers in its connectors.

https://www.apple.com/shop/product/MQ4H2AM/A/thunderbolt-3-usb%E2%80%91c-cable-08-m

"USB 3.1 Gen 2 data transfer at up to 10 Gbps"

For a longer cable you will need a non-Thunderbolt 3 USB 3.1 Gen 2 10 Gbps cable.

You should try to use a 10 Gbps cable. The theoretical maximum data rate of the display is about 36 Gbps. Thunderbolt 3 can handle 40 Gbps. Normal video will not need the maximum data rate because of compression and the display's frame buffer, but a slower cable might cause flickering or lag with with some video.

Apple probably never intended the display to work without Thunderbolt, but it uses one of the newer Thunderbolt 3 chips, which happen to also work with USB. Your test with the short Apple cable may be the first time one of these displays has ever been used without Thunderbolt.

A 3 Amp vs 5 Amp cable won't make any difference unless you are using a laptop. In that case, charging will take longer with a 3 Amp cable.

The display's brightness is controlled via USB. Other brands of display, such as LG, also do this, so there may be some non-Apple brightness control software available for Windows. First, find out if the graphics card is passing USB data from the computer's PCIe bus to the board's USB-C connector. Try the USB-C ports on the back of the display, maybe with a keyboard. If the USB ports work, then USB brightness control software should work. If the ports don't work, you might be able to set the brightness by plugging the display into one of the computer's USB ports (not on the graphics cars), setting the brightness, then moving the cable to the graphics card's USb-C port. It might also be possible to control the brightness via a second USB cable connecting one of the display's USB ports to a port on the computer.

I suggest reviewing the post by Verite_Rendition discussing the bandwidth required to the Pro Display XDR. A Thunderbolt 3 (40Gbit/s) connection is required to support the XDR display.

https://www.reddit.com/r/nvidia/comments/bwwys3/will_2080ti_work_with_pro_display_xdr/

https://www.amazon.com/USB-C-Cable-Delivery-Charge-10Gbps/dp/B07MW1ZWP6/

Hi MrIpkiss!  when you connected the display with a usbC cable, did it work with a resolution of 6K 10bit? I also wanted to know, did you manage to adjust the brightness of the display and make other settings using Windows? thanks

Hi MrIpkiss! 

Hi! How did you manage to solve the problem of adjusting the brightness and color profiles?