There are a few options:I read through this thread but still couldn't find a solution for the issue i'm facing (perhaps there was but i am not fully understanding some USB-C tech situations)
I have a xiaomi mi notebook pro (16GB, i7 version) and i bought the Asus MB169C+. The notebook pro has 2 USB-C ports, however only 1 can be used to charge the device (PD). If i plug the asus screen into that port it works but i cannot charge my laptop at the same time. I also tried the official xiaomi USB hub that has multiple USB-C connectors but it would only let me charge the laptop through it, not plug the screen in as well.
Before i try selling it on ebay, is there any other possible way I can get the screen working + charge my laptop at the same time? Perhaps using some adapter for a workaround
I'm now looking at USB-A portable screens so it will free up the power delivery USB-C on my notebook pro - https://www.asus.com/uk/Monitors/MB16AC/
1) You need a USB-C dock with power deliver plus USB-C with DisplayPort alt mode output. The HP Thunderbolt Dock G2 will do that (it works with computers that have USB-C with or without Thunderbolt - it has up to 100W of Power Delivery). There may be other similar docks.
2) The Wacom Link Plus can take video from the laptop's HDMI port and convert it to USB-C with DisplayPort alt mode, leaving your USB-C port free for charging. I didn't have much luck with the HDMI input of the Wacom Link Plus, but maybe it could work for you.
3) There exist USB-C to DisplayPort output adapters with 60W of Power Delivery from StarTech (USB-C to DisplayPort Adapter with USB Power Delivery) and Cable Matters (USB-C to 4K DisplayPort Cable with 60 W Power Delivery) and probably others. They might be an improvement over the HP Thunderbolt Dock G2 because they allow 4 lanes of DisplayPort (USB-C docks are usually limited to 2 lanes of DisplayPort when they are not connected via Thunderbolt). The Asus MB169C+ probably works fine with 2 lanes because it is only 1080p60. 4 lanes is required only if you want 4K60. You still need to convert DisplayPort output to USB-C for the display. The solutions already described in this thread should work (Huawei VR 2 cable or Wacom Link Plus or PCIe card). These adapters don't expose the USB part of the laptop's USB-C port. An adapter like the Apple USB-C Digital AV Multiport Adapter does expose the USB. Now if only they had the same adapter with DisplayPort output instead of HDMI. Still, the Wacom Link Plus might convert HDMI to USB-C with DisplayPort alt mode. Actually, there's a couple USB-C Multiport Adapters from Cable Matters that have Power Delivery, DisplayPort, and USB. The first USB-C Multiport Adapter has four lanes of DisplayPort 1.4, and an internal USB 2.0 hub for two USB 2.0 ports and a USB Ethernet port. The Cable Matters Dual Monitor USB C Hub is similar but includes a built-in two port DisplayPort 1.2 MST hub. If you combine a Huawei VR 2 cable with one of those then you might have the simplest solution with a free USB 2.0 port - but compare total price with HP Thunderbolt Dock G2 first before deciding (but also consider the speed of the USB (2.0, 3.0, 3.1 gen 2), the number of DisplayPort lanes (2 or 4), the version of DisplayPort (1.2 or 1.4) and the kind of display you might want in the future).
4) USB-A portable screens use USB signals from software instead of video signals from the GPU. They usually use DisplayLink. Cons: not as performant as video from GPU (not great for video and gaming). Pros: allows adding displays without a video connection - thereby exceeding the number of displays supported by the GPU (Intel graphics is limited to 3 displays including the laptop display, but DisplayLink is unlimited as long as there is a USB connection to use).