UPERFECT - Portable Monitor FHD 1080P 15.6 Inch IPS Screen

Hi all, I've got a question about this portable monitor that I bought for my Mac M1 a while back that I intend to use with my new Ally X. I wanted a USB-C monitor specifically, so that I wouldn't need an external power supply for the monitor. In other words, the Macbook should both provide power and audio/video signals via a single DP Alt Mode USB-C cable. And that's exactly what I got. It's a clean and seamless experience only having to use a single cable. Now, I'm trying to use that same portable monitor and that same cable with my Ally X, but no matter what USB port I use on both the monitor and the Ally X, no combination seems to provide power and video signal. The monitor powers on, says "no video signal" and then enters power saving mode. I am only able to get the display working by plugging the monitor into a separate power supply. This is the monitor in question: [https://www.amazon.com/gp/product/B07TWGBG3P/ref=ppx\_yo\_dt\_b\_search\_asin\_title?ie=UTF8&psc=1](https://www.amazon.com/gp/product/B07TWGBG3P/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1) This is the cable that works with the Mac: [https://www.amazon.com/UGREEN-Delivery-Compatible-Matebook-Chromebook/dp/B082X5QY91/ref=sr\_1\_5?crid=1BVGPDE7WHUUY&dib=eyJ2IjoiMSJ9.Ig4Lt227EYrq8UtP0uYoIG0O8Or0XF9xPpszbTFR42emvggiLZ9ZJextVuZjTj7Q3h1JE-SwSe7muWJiRhq4t0GTQMZoVpUt6OHaj0BvX2qI7C\_ULoegW2aOZSXKiM\_clBr4mnQK9BOiueZxhEVUIVmMgzNq9Bt\_xzcxiGBkY9JoJcQ5nnxkp7YuZHtiR9iAi4nmEg8wO9h-K6regGZz7VkT\_nXtTCsMOgiJpIHDQ84.cwdqohcu\_p5f6Ixg3uinjvESB-lWPqFP\_BsC8wdPtzk&dib\_tag=se&keywords=ugreen+10bps+%5Cusbc&qid=1736189190&sprefix=ugreen+10bps+usbc%2Caps%2C125&sr=8-5](https://www.amazon.com/UGREEN-Delivery-Compatible-Matebook-Chromebook/dp/B082X5QY91/ref=sr_1_5?crid=1BVGPDE7WHUUY&dib=eyJ2IjoiMSJ9.Ig4Lt227EYrq8UtP0uYoIG0O8Or0XF9xPpszbTFR42emvggiLZ9ZJextVuZjTj7Q3h1JE-SwSe7muWJiRhq4t0GTQMZoVpUt6OHaj0BvX2qI7C_ULoegW2aOZSXKiM_clBr4mnQK9BOiueZxhEVUIVmMgzNq9Bt_xzcxiGBkY9JoJcQ5nnxkp7YuZHtiR9iAi4nmEg8wO9h-K6regGZz7VkT_nXtTCsMOgiJpIHDQ84.cwdqohcu_p5f6Ixg3uinjvESB-lWPqFP_BsC8wdPtzk&dib_tag=se&keywords=ugreen+10bps+%5Cusbc&qid=1736189190&sprefix=ugreen+10bps+usbc%2Caps%2C125&sr=8-5) I read this post as well to try, and it seems some people have success if I understand their accounts: [https://www.reddit.com/r/ROGAllyX/comments/1ecqcpc/does\_the\_rog\_ally\_x\_work\_with\_a\_portable\_monitor/](https://www.reddit.com/r/ROGAllyX/comments/1ecqcpc/does_the_rog_ally_x_work_with_a_portable_monitor/) Is there any additional setting I'm supposed to tweak? Maybe something to do with the power consumption of the Ally? With my Mac, it was plug and play with no additional setup. I don't know why the thunderbolt 4 on the Ally X doesn't exhibit the same behavior as the Mac. I'm starting to consider the issue lies with the monitor. If so, I would love some monitor recommendations if anyone knows a solution to this. Thanks EDIT: I've managed to get this working finally, and for anyone interested in the solution, I've posted below. A huge thank you to user u/buckminst for anecdotally providing the fix after I scoured dozens of posts and online articles. While it's not entirely ideal to have to buy a third party adapter, I've reported everything I experienced to ASUS engineering. It would be great to see a firmware push in the future. EDIT2: This was the original post where I found the comment about the adapter: [https://www.reddit.com/r/ROGAlly/comments/1foax94/ally\_x\_wont\_output\_video\_signal\_through\_usbc/](https://www.reddit.com/r/ROGAlly/comments/1foax94/ally_x_wont_output_video_signal_through_usbc/)

Let me start by saying I called ASUS technical support, and they were not much help. I got the feeling their level 1 support just uses knowledge articles and scripts and doesn't do much troubleshooting. They recommended that I bring the model back to the original retailer. Luckily I was inside my return policy, and Best Buy just swapped it out for me. They didn't give me any flack when I told them I had a case number from manufacturer saying it was defective. Of course I know now that it wasn't defective, but I decided to swap anyways because it was going to eat at me thinking my device was somehow broken. The second device acted the exact same: would only power monitor instead of providing power and video. I went back and did more digging and found a post by user u/buckminst that said he was able to get it working using an adapter. You don't even need to power the adapter separately. **Anyone who manages to find themselves here in the future, the solution is a third party adapter recommended by another user:** [**https://www.amazon.com/dp/B0CGMGDK53?ref=ppx\_yo2ov\_dt\_b\_fed\_asin\_title**](https://www.amazon.com/dp/B0CGMGDK53?ref=ppx_yo2ov_dt_b_fed_asin_title) For whatever reason, neither of the full function USB-C ports on the Ally X will send the DP Alt Mode signal to the monitor without the use of an adapter. This adapter was originally meant to provide video to the Viture glasses and sends a signal to the monitor from the source to use DP Alt Mode, which is the protocol that allows power and video/audio signal from the source instead of one or the other. Here is a picture of the ally both powering the monitor and sending audio/video. Although this is not a single cable solution technically, it still gives me the portability of using the monitor without need for an external power supply like a power bank or a wall. Mind you, this only applies to monitors that don't have an internal battery and therefore do not need to draw power from the ally. https://preview.redd.it/eqkn51f8y0de1.jpeg?width=5712&format=pjpg&auto=webp&s=4a14a6a9a8e762b97aca21858a576813ef5f632e The male end of the adapter has to be plugged into the ally, on either usb-c port for this to work, since it is the source. If you plug the male end into the monitor, this will not work. Then any usb-c gen 4 or thunderbolt should be sufficient to take care of the rest. There are two ports on the adapter, and only one of them sends video to the monitor. The port with the glasses icon next to it is the correct one. The port with the lightning icon next to it is not a full feature usb-c and only does charging. I've seen people report their success with the ally x inconsistently. My two cents on that is that their monitors probably have internal batteries or they were plugged in and didn't understand the scope of the question. This was just bothering me so much. It really is a nonissue, because most of us have portable battery packs that can power the monitor while the ally just gives video out. Portability is the major appeal, however, and that form factor becomes more managable the less setup you need. A *single* cable solution was a must for me. Hope this benefits anyone in the future also struggling to get this working. Many Ally uses who upgrade to the Ally X are probably confused because you don't have this issue with the original Ally. I reported this issue after the fact to the engineering product team for whatever it's worth. Anyways, thanks for reading.

Same - love it.

I got a generic Amazon one - 15 inch no name brand BUT I got it with VESA holes so it’s mountable - I then bought a portable swivel mount so when it’s at home it’s just another monitor and you can put it in a more comfortable position when you’re travelling. Probably cost $100 all in all for both (70$ monitor and 20-30 for the mount) UPERFECT Portable Monitor, 15.6” IPS HDR 1920X1080 FHD Eye Care Travel Screen USB C Gaming Monitor, Dual Speaker External Monitor HDMI Type-C VESA for Laptop PC Phone w/Case https://a.co/d/03ZZeCg WEARSON 75mm VESA Mount Monitor Stand - Foldable Small Monitor Stand for10 13” 15.6” 16” 17” 17.3” inch Portable Monitor Stand Lay Flat support VESA 75*75mm (Black) https://a.co/d/9mrUQox They both fold down nicely and fit into 1 laptop sleeve. I carry two small screws and the right sized Allen/hex wrench that I put in a small ziploc and add to the case.

I also grabbed this one a few weeks back. Works for my remote work at a cafe scenarios. 

I brought this one which suited my needs UPERFECT Portable Monitor FHD 1080P 15.6 Inch Monitor IPS Screen Matte Monitor, with Standard HDMI/Type-C, Support VESA, Second Monitor for Laptop/PC/Mac/ PS3/4/5/ Phone/Switches, with Smart Cover https://amzn.eu/d/chePqTf Got it from amazon, works fine for what I need it for and it lightweight.

I recently [collated comments across Reddit](https://redditrecs.com) to find the ones that most people are recommending. Fwiw my wife and I have been using UPERFECT’s monitors. They’ve been good. My protip is to get one that is 400-500 nits. Avoid those that don’t list the brightness at all. I’ve wasted money on one that is too dim before

Thanks! The UPERFECT ones that me and my wife have are unfortunately no longer available (one was FHD and one was 2k) as I bought them pretty long ago, I think 2-3 years? They were both listed as 500 nits though and I found their brightness good. The FHD one was a bit brighter than the 2k I’m thinking of getting a new one soon and if I were to choose I’d probably go for that one you mentioned because of the good reviews. It’s listed as 400 nits only but hopefully they’ve improved the tech in the newer model and hopefully it would be as bright?

I recommend the UPEFECT. I use mine for my ROG Ally and Samsung Dex setups.