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Previously posted this to the QCX group. Don't ask why, I'm 85...8^)
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Well, I got one of the white plain vanilla NanoVNA-H units from Walmart for $39 and my son is printing an enclosure for me. I've no intention of using it above 60MHz so wasn't concerned about shields and etc. Just something to do some basic ham stuff.

Now, I need some help.

By itself, it seems to be doing what it should do. But...

Attempting to use it with the nonovna-saver software a problem shows up. Scanning for a port produces nothing.
The interconnect cable has a typical USB plug on one end and one of the newer micro USB connectors on the other. The computer does not recognize the VNA as a connected device; it does charge the battery.

I've attached a PDF document with as much info as I could find that might provide some clues?

If anyone can spot something from the PDF info or otherwise that would provide a solution, the info would be greatly appreciated.

Thanks all...
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Update:

I found this in a reply to another message I'd posted...

<If you ordered an older model NanoVNA, with open sides, then you will need to use an OTG cable between the two devices.>

And that's what I have so off to Amazon to order one OTG adapter...

Hi Chuck,
i see you need to install a driver on windows 7 so that your computer can see nanoVNA. To do this, download and install en.stsw-stm32080.zip (DfuSe) or STSW-LINK004 (ST-Link) or en.stsw-stm32102.zip (STM32 Virtual Com Port driver). DefuSe or ST-Link is required for a firmware upgrade.
After installation, plug the nanoVNA connector into your computer's USB port. Use the USB cable (not OTG) supplied with the nanoVNA.
I don't know what the usb connector of white nanovna.
You can see in the device manager of your computer that it is present at COM & LPT.
If not, a little utility (USBDeview) will help you to remove the faulty driver.
To run nanoVNA-Saver on Windows 7, you must have the SP1 Service Pack installed and MS VC ++ multipack (2005-2017) installed, then the windows exe version of nanovna-saver will work. It starts up slower when you first start up, later it is faster.

Hope I was able to help with the solution.

73, Gyula HA3HZ

On Sun, Jan 12, 2020 at 12:51 PM, Gyula Molnar wrote:

Hi Chuck,
i see you need to install a driver on windows 7 so that your computer can see
nanoVNA. To do this, download and install en.stsw-stm32080.zip (DfuSe) or
STSW-LINK004 (ST-Link) or en.stsw-stm32102.zip (STM32 Virtual Com Port
driver). DefuSe or ST-Link is required for a firmware upgrade.
After installation, plug the nanoVNA connector into your computer's USB port.
Use the USB cable (not OTG) supplied with the nanoVNA.
I don't know what the usb connector of white nanovna.
You can see in the device manager of your computer that it is present at COM &
LPT.
If not, a little utility (USBDeview) will help you to remove the faulty driver.
To run nanoVNA-Saver on Windows 7, you must have the SP1 Service Pack
installed and MS VC ++ multipack (2005-2017) installed, then the windows exe
version of nanovna-saver will work. It starts up slower when you first start
up, later it is faster.

Hope I was able to help with the solution.

73, Gyula HA3HZ

================================
Gyula, thanks for the feedback.

I had attached a PDF including the information I had hoped would show the problem and system information for my computer. I've attached it to this message for reference.

This problem is above my level of understanding and knowledge. The list of ports and drivers is included on the PDF. Which is what and correct or wrong is not obvious to me.

So then, I'll need to educate myself and hope to figure out what is what from the information you provided. I believe I do have the correct connection cable once the other problems are corrected.

Regards,

--
Chuck, W5USJ

Hi Chuck,

I created a pdf for the solution. Hope you can shape it. I wish you a successful installation.

73, Gyula

Gyula,

The PDF is a big help. After reading your previous message, I was scanning the book about NanoVNA via Kindle. Near the end of the book (?) I found a reference to the need for a printer driver; Needed before you could run the VNA to do the things previously described in the book... ;-)

Ah-hA, now I remember. Seems we did that in the early days before most software auto-installed what it needed.

The book made reference to a driver called PuTTY; so I found it and installed it, ran it, but novavna-saver didn't find it! Decided not to pursue it.

Next, I downloaded the ST 32bit driver from your PDF. Installation failed as my PC required a 64bit version. Found an updated version on the STMicroelectronics site and installed it. (VCP_V1.5.0_Setup_W7_x64_64bits.exe). SUCCESS!!

Nanovna-saver found it at COM4 and ran a scan: Useless info as nothing was connected, but it seems to be working now.

Many thanks for your help; I'd have had no idea where to look for the needed driver**. ST also has versions for W8 which were also downloaded. Maybe someone else would have a use for the info. There are 2 versions each in the Zip file, W7 and W8, of 32 and 64 bits.

Again my thanks and Best Regards.

**I tried the Microsoft site but not much help, maybe because Win7 is no longer supported.