Are you sure that this product uses a Silabs CPx chip? Apple has an official technical note called “Technical Note TN Kexts won’t unload if they are in use. I wanted to look into this issue. Replied Sep 02 , 5: Replied Sep 26 , 2: Want to add to the discussion?

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So make sure you check that. Replied 52 days ago. Any help to install it successfully would be greatly appreciated!

I don’t macintsoh these values showing up for any of the supported personalities for our driver. If the driver was blocked, it is supposed to have a button that should say “approve” on it.


Installing the Driver After installing complete, I have not been prompted by the Mac security settings. I wanted to look into this issue. So, in the case of the Silabs driver, if you have a device plugged in, it creates an instance for that device until you unplug the device, so it might not unload if that instance is in use.


Dominik Palo 1, 2 20 You should see a request from MacOS for you mscintosh allow Silabs Driver, in case you don’t have pc210x enabled.

hardware – CP device is not listed in /dev on macOS – Ask Different

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There is also kextload which does the same thing but without the information as to why it failed. As macOS High Sierra Plus; auto updates.

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When I tried the above commands I got no results neither. Then once you install the driver, there is an issue that is speific to High Sierra Sign up using Email and Password. Please edit the post as needed to suit your needs if desired. You can tell if the driver is loaded using the Terminal. So when you run the installer as I described above oe basically just puts that file on your computer and tries to load it.

CPx Mac OS Drivers

Select the device and then you’ll see some some properties. All kernel extensions for MacOS X must be signed using a special key from Apple and then must be approved by the user. I used the slabs Uninstaller script and it did return the driver not found error. You’ll see that 0xea71 is in decimal and 0x10c4 is An excellent overview of this process is at man blogs – here is one such guide: Then you’ll see a USB device tree.


I’ve uninstalled and installed several time without any success. Here are steps to allow this extension: These records are how the operating system associates the driver with the device. I checked the latest driver, checked my security settings.

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