HDMI 2.1 Dummy Plug 4K@120Hz Virtual Display Emulator, Headless Adapter, HDMI Display Adapter, Supports 3840x2160@120Hz, 1440P@120Hz, 1080P@120Hz, EDID Emulator for GPU/Remote Desktop

Great way to trick your computer into outputting whatever resolution you need. It can get really hot to the touch when streaming games, but it works well. It's very small, with a good, sturdy build quality. This was well worth its small asking price.

Normally these are not worth the money to me, it’s a dummy plug. That said, it’s a super simple way to tell your headless server, or say Mac Mini, to use a static resolution- no need to find a finicky software or compromise your computers security.They are built solid, fit correctly but not too snuggled, have a low profile with enough space to still easily grab and remove, and being hdmi works with any hdmi compatible computer.

These work great! We have them plugged into a Mac mini farm that we remote into for an application. This allows the screen sharing app to look way sharper and have more resolution options. Plus it acts as a debug light letting us know the mini is on.

I had the need to purchase and use three of these. All worked as expected without issue.

If you need a dummy plug for whatever reason, these will work.However, if you are like me, you might have purchased these because they say they do 1080p natively... which is true, but because it also goes to 4k, this can be a problem for some situations. In my case, I'm trying to stream my SteamDeck, and my XR1Lite defaults to 4k capture at 30hz. Until Valve lets us define the resolution manually, this means the Deck also will follow this. If I connect a TV on the pass through, then this will set the capture card to report its resolutions (up to 1080p), and thus the deck will follow along.So you can see why I purchased the plug, and specifically these ones that say "will do 1080p natively." As included in the screenshot, they support up to 4096x2160@24Hz. This means the deck will follow along, making things slow. Thankfully, with a Raspberry Pi, I was able to flash one of the plugs to mimic my TV's EDID signals, resulting in it reporting only up to 1920x1080@60Hz. This does require using edid-rw and tvservice to write and dump the edid data, but if you were needing to know, these plugs will accept the new dumps and have worked great as a result!However, if you are wanting an out of the box experience of 1080p only, as it would appear to be listed as, you will be spending a good while getting everything set up just to fix the issue. At least you get 3 of them for experimenting.

This enabled my sound on my server, I don't have a monitor connected to it so there was no sound, plugging this in fixed that issue.

Despite the product listing, this dummy plug does not support 4K120. The EDID only reports 4K60, which I’ve verified in Linux (screenshot attached). It will run 1440p144 or 1080p120, but not true 4K120. Wasted money and time returning it.

I bought this to connect to a Windows PC at work that I have tucked away in the corner of my office ever since switching to a MBP.Has only been a week but zero issues connecting via chrome remote desktop and parsec so far, completely plug and play. I'll update if I run into issues.