DeskMini 110B - Shielding problem?

Some days ago I got my DeskMini 110B to replace an other small desktop PC. It's a great device but I've got an issue with wireless USB mice.

Edited by Aramis - 24 Sep 2016 at 11:12pm

Also, since mice don't req usb 3.0, if you are using 3.0 ports for the dongle, place them in a 2.0 port and reply back. Otherwise try the cable trick. I've recommended it here many times and while not 100% it has solved quite a few

Hello wardog,

yes it is weird. Because of this I added this thread...

The USB hub I'm using has a 1m (3 feet?) cable. So I moved it from one side of the monitor, next to the PC, to the other. Also in this case the mouse wasn't operable.

What I haven't done so far is moving the PC "out of the way". It is placed on the right side of the monitor next to where the mouse is (less than 1/2m (2 feet?)).

What is funny: The WiFi stick - also a 2.4GHz device - is working properly when connected. The bandwith is "rock solid". The stick is running at about 130MBit/s.

@parsec: Thanks for the hint. I know that from HF point of view the devices are different...

What I wanted to say: With the old PC everything is working fine.

Are you using a wireless mouse? As described above the WiFi of my PC is working without any problems. But the mouse isn't. Even when WiFi is disabled or disconnected...

With the old PC the mouse I used was working properly in an area of >>5m (20 feet?) around the PC.

As it is the only thing I changed I think the DeskMini is the reason why the mouse is inoperable. I tested three different wireless mice of two different brands. All of them didn't work anymore.

It seems as if the DeskMini is a kind of "Störsender" (interference source?).

By the way: With the old PC I was using three devices (WiFi, mouse, Bluetooth) in paralell without any problem...


Edited by Aramis - 25 Sep 2016 at 3:04pm

OK, I will try it just with a cable...

P.S.: As mentioned before - connected to the front plug (directely) it wasn't working


Edited by Aramis - 25 Sep 2016 at 3:11pm

Aramis wrote: Addendum:  Now the mouse dongle is sitting where the DeskMini has been before. The DeskMini is about 1,5m away under the desk.  The mouse is working "perfectly well" independent if it is connected to the USB 3.0 Hub or directly to the DeskMini. I have to check this but I think my DeskMini is some kind of "radio station"...

I'm not sure if I understood your original configuration of the mouse dongle and one of the wireless network dongles.

Did you have both of those dongles connected to one USB hub? The hub is then connected to the DeskMini, to either the USB 2.0 or USB 3.0 port?

Now the mouse is working fine when it is connected to the DeskMini by itself, or using the USB 3.0 hub, right?

I don't understand what changed, besides moving the DeskMini itself under the desk. That seems to be all that was changed, is that right?

Radio signals are affected by many different things. Anything made of metal can affect radio signals, and how that affects the signals is unpredictable. The weather even affects your local wireless connection strength. Which reminds me, can you monitor the signal strength of your wireless connections?

A USB hub that can allow us to connect multiple USB devices, still only has one data connection between the hub and the USB input port. That's true for USB 2.0 or 3.0. USB 3.0 has more data connections, but that is what allows it to be faster.

Imagine a wireless mouse and wireless network device on a USB hub, they must share the data connection to the PC. That seems to work fine, your problem seems to be interference to the mouse signal. As wardog said, keeping the network and mouse signals separate, if possible, is a good idea.

Try putting new batteries in the wireless mouse, it might be broadcasting a weak signal.

The USB 2.0 port cannot supply the same amount of power that a USB 3.0 port can. That might be a factor for you, not enough power for both dongles at the same time.

I have a wireless mouse and keyboard that I use with my DeskMini, a Logitech that is not known for its good quality. It uses one dongle for the mouse and keyboard together.

I enabled the wireless network adapter that is connected to the M.2 slot on the DeskMini board, I'm using it now. My wired network connection is disconnected, the cable unplugged. The keyboard and mouse works fine.

This is not the same as your configuration at all, so not a fair comparison. As you learned, moving things around seems to have reduced the interference problem you seem to have. The DeskMini power supply has long wires that are also great antennas, moving the wires to different locations could help.