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Re: nano VNA-H will not connect via USB to control apps on Win10 - help please

 

I don't think you need to add any drivers on Win 10... (Pretty sure, I didn't, anyway. But it's been quite a while.)

You might try going into Device Manager, select View / Show Hidden Devices, and remove the hidden COM devices (they'll be shown in gray.) Disconnect your nanoVNA first...

You could even watch devices and you plugin your nanoVNA, and see what's actually going on. (It actually starts as a USB device, and the driver makes it into a COM device.)

Paul

On 8/29/23 18:32, Brian Stokes wrote:
I posted this query on Jul 17 #33483

There were no helpful replies.

I have tried installing every USB driver I can find for the nanoVNA but none of them makes the nanoVNA appear in the list of USB devices.

Have installed Cypress driver and 64 bit ST virtual COM port app.

No new COM ports appear when VNA is connected nor when virtual COM port app installed.

Device manager shows new 'Unknown USB device (device descriptor request failed)' when VNA-H is connected and powered up. Cable appears to be good since Device manager sees the VNA.

Tried several apps, VNA-QT, nanoVNA sharp 1.03, nanoVNAsaver, none will connect.

PC is Win 10.

Thanks for your help.
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