Good Picture/Sound, Some Latency, Sparse Documentation, Not for Casual User
Reviewed in the United States on 27 May 2021
Use: I got a new TV and needed a new entertainment center to fit the TV. My HTPC then no longer fit next to the entertainment center, but since the PC also acts as a local fileserver for my home network, I wanted to be able to keep the PC set up, with the option to transmit to the Receiver/TV for locally saved Music and Video.
Set up: Setting this up was painful! As noted, the documentation is sparse. The receiver was straight forward though - plug in the HDMI cable and the USB-A Micro power cable. When you first plug in the receiver unit (with antennae), it displays a screen that's mostly in (presumably) Chinese - with SMALL English subtext. The transmitter was much less clear. The instructions say that it might be ok with power over HDMI - and mine appeared to be fine ... the indicator light was steady, saying it was paired, but there was no picture other than the set-up screen from the receiver. Then I tried plugging the USB-C power cord into the transmitter, and the solid light lit up brighter and the device finally started transmitting signal. (This was after some other issues that were tied to the HDMI out on my computer, which added to my frustration, but testing on another HDMI device made it clear the issue was with the computer, so if you don't have signal, be sure to check another device before trying to go through the re-pairing process for the transmitter and receiver). So, the set up was not as straight-forward as it should have been.
Set-up, Part 2: There are instructions on the set-up screen about connecting to the device on your phone via Wi-Fi and then completing set-up on there. This MIGHT be necessary step, but I'm completely unsure, because of all the other troubleshooting steps. This screen prompts you to connect the unit to your home Wi-Fi (more on this later), and allows you to update firmware, and reset the device, along with changing a few other settings. I connected to Wi-Fi, Updated firmware, and did the reboot. Everything was working at this point. Each time I reboot, my phone connects back to my home Wi-Fi, but you need to connect directly to the device to access the settings, so I suggest that when you're done with the updates, you go back in, choose your Wi-Fi network, then "forget" the Wi-Fi connection.
Performance: As long as you aren't connected to Wi-Fi, the Video and Sound performance are good (not "great" and definitely not as good as a wired connection). When connected to Wi-Fi though, the device appeared to be transmitting across Wi-Fi at times (or maybe there was some interference?) and I'd have awful sound hiccups (maybe video as well?). Disconnecting from Wi-Fi seemed to fix that issue, but there are still SOME minor hiccups in the sound - also, the Wi-Fi channel seems to matter - the device default is 20MHz, but there are options for 40MHz and 80MHz - I found there were more issues on the higher frequency channels, so I left it on the default 20MHz and had far fewer issues.
One thing that is a nuisance is the latency - it actually makes using a mouse difficult at times as the mouse appears to drift around the screen. I've tested with different mice, checked batteries, etc., and found the issue goes away if I connect directly to HDMI again. It's odd, because I don't notice the latency while watching videos, or really too badly while using a keyboard (not that I've used the keyboard much) - but I don't think this would work for gaming at all because of the challenges I've had just using the mouse. It's like I get the cursor close to where I want, then I have to slowly adjust from there to get it where I want it.
One nice surprise from this was it solved an odd issue for me. Since I was using my HTPC for music, sometimes I would pull everything up on the TV, then I wanted to turn the TV off once I had the music queued up - but the HDMI card in the computer would see the TV display go off and then it would shut down the sound and the receiver wouldn't play the music until I cycled sources - since this doesn't have a direct connection from the HDMI port to the Receiver and TV, when I turn the TV off, it doesn't affect the computer/receiver/sound anymore.
Ultimately, I think this would be well suited for things like presenting a screen in a presentation where you might more likely be looking at your own monitor and using this as a mirrored display. It would also be reasonably easy to pass the Transmitter puck around if all the computers had an HDMI port (or HDMI adapter). It's ok for what I wanted it, and I'll hang onto it because I use the computer relatively infrequently on the media/entertainment center, but if I used this often, or especially for gaming (game consoles included!), I'd be looking for another solution.
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