The LG UltraFine 4K Display requires a Mac with a USB-C port or Thunderbolt 3 (USB-C) port running macOS Mojave 10.14.5 or later, or an iPad Pro with a USB-C port. You can use the LG UltraFine 4K Display at the following resolutions and refresh rates, depending on your device: 3840 x 2160 @ 60Hz. iMac Pro. Learn how to connect multiple displays
6. Try a USB 'Y' cable (if you are using a USB powered monitor product) Ensure you connect both ends of the 'Y' cable to USB ports on your PC 7. Try connecting your product through an external mains powered USB hub Some USB 3.0 enabled PCs can exhibit issues which can be resolved by connecting your product through an external mains powered USB
Use the USB-C™ cable enclosed with the monitor for connection. If a cable for a different product is used, it may cause the screen to operate abnormally. If the device connected to the monitor has low battery, connection may be lost. This monitor supports the plug-and-play function. (Plug-and-play: When a device is connected to a PC, the PC s2NXv5w.