Easiest way to drive LG UltraFine 4K Monitor with eGPU
@le_quang_duc, what model MacBook and Ultra 4K are you talking about?
The Huawei vr 2 cable works only in one direction - from computer to display. Power comes from the computer via USB 2.0 port (only a few watts) and goes to the display.
Any in-stock alternatives to the Huawei VR 2 cable?
Don't have an eGPU but stumbled upon this thread when looking for a solution to connect an original 21.5" 4K UltraFine to a PC. The cable isn't available anymore and costs upwards of $100 on eBay. If there's no alternative, I'd consider the eBay option but is there confirmation that it drives the full 4096x2304 at 60 Hz?
4096x2304 at 60 Hz is DisplayPort 1.2 so any of the listed options should work.
@joevt, Thanks! I purchased a bidirectional ALOGIC USB-C to DisplayPort cable and was able to connect the LG UltraFine 4K (older 21.5" model) to an RTX 480 on a gaming PC and it worked! 60Hz at 4096x2304. No USB or audio but this will do for now.
Just want to report that I built a new computer with an NVIDIA 2060 Super (Founders Edition) which has a USB-C port for VR headsets on it.
I plugged in my UltraFine 4K (original edition) using the original LG TB3 cable and can confirm the USB hub on the back of the monitor and speakers work. Very happy to no longer need a bidirectional DisplayPort to USB-C cable in addition to the TB3 cable with an added bonus that my peripheral devices work.
Hi, I have an RX 580 8gb, which has a displayport 1.4.
I want to connect it to an LG Ultrafine 21.5" 4k. (I'd be buying this 2nd hand off of eBay for a good price)
I think the best way is to connect it using a bidirectional USB C to DisplayPort 1.4 cable, but I’m not sure whether it will work or not. Do you know?
This is the cable I’m thinking of using: https://www.startech.com/AV/display-and-video-adapters/usb-c-video-adapters/6ft-usbc-displayport-cable-8k~CDP2DP142MBD
By the way, my computer is a hackintosh that’s running macOS Big Sur but also dual boots into Windows 10. I mostly just care about achieving the full resolution of 4096x2304 at 60Hz when I’m in macOS, but it would also be welcome in Windows. And I’m not sure if the extra USB C ports on the monitor would be able to send data back to my graphics card and computer or not.
I'm looking to drive an LG UltraFine display with a much simpler setup.
My setup is as follows:
• MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports) running Catalina
• A single 23.5-inch LG UltraFine Display
I have no need of running or dual-booting into Windows.
I am considering getting a Razer Core X and putting a recent Radeon card in there.
My understanding after reading this thread is that I would connect the eGPU to the display with a DisplayPort to USB-C cable, but that wouldn't be enough to turn on the display or allow control of brightness of audio volume. Some have suggested a Huawei VR2 cable as the solution for that but it doesn't seem to be available anywhere.
What would be the simplest solution for this?
Thanks so much in advance!