Have had to buy new laptop and now the Ports option in Tools is greyed out.

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Have had to buy new laptop and now the Ports option in Tools is greyed out.
Operating system Windows 10
Arduino IDE version 1.8.13
Arduino Uno clone (source unknown)

Uno works fine using same cable but on another computer

One of the answers I read to a similar problem on this forum suggest identifying the USB chip and downloading the latest driver for it but I can't tell which of the chips is the appropriate one. The UNO has two LM358 chips but I think they are op amps and an AMS1117 which is a voltage regulator.

Plugging the UNO into one side of the laptop results in the Device Manager not seeing it at all. Plugging in to the other side Device Manager reports that the Arduino is on COM 4 and that an unknown device is on COM3 so I guess I have USB 2 on one side and USB 3 on the other. Despite Device Manager seeing the UNO on COM4 the Tools/Ports is still greyed out and sketches report error unable to open com.

In Device Manager I have tried Update Driver option but get report that current driver is the latest available.
I have now run out of ideas.
Can anyone help me to get my UNO running again??
Many thanks

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Install the driver for the USB - Look at the cip next to the port, ir will have a part number on it, post this if you can't work out what chip it is.

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The part will either say "MEGA16U2" or "CH340".

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I have used a microscope to look at the chips and cannot find either of those.
There is a long chip with 16 connections. It has no name or number on but does have a dot at one end.
The chip next to the USB plug has 508E on it. It has brass coloured ends.

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Laurence:
There is a long chip with 16 connections. It has no name or number on but does have a dot at one end.

Does it look like the chip shown in this picture:

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Yes it looks just like that but without any text

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Laurence:
The chip next to the USB plug has 508E on it. It has brass coloured ends.

https://gsmusbdriver.com/true-slim-ssb-508e ?

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Sorry. Is that a link to a driver I should download?

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I don't know about the 508E, but from "brass colored ends" I'm sure it's the PTC fuse.

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Laurence:
Sorry. Is that a link to a driver I should download?

I don't know, hence the question mark. Read it and see if there is a solution for your problem there...

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Ah I understand. It seems to be a usb chip for a mobile phone but thanks for trying.
Is it a realistic solution to download each of the two drivers in turn and try them?

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https://www.google.com/search?q=508E+USB+Windows

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Thank you Erik_Baas and pert for taking the time to help me out.

I will install a CH340 driver and if that does not work I'll uninstall it and try the MEGA1602 driver and if that fails I'll give the 508E a try.

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CONCLUSION

I downloaded CH341 driver from the Sparkfun web site and it worked perfectly.

Thank you again.

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You're welcome. I'm glad if I was able to be of assistance. Enjoy!
Per

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