Just looked through my kexts. I've got two that I use, one that I dont, all signed and approved by Apple: * Driver for RTL815X that works with my USB Ethernet

Just looked through my kexts. I've got two that I use, one that I dont, all signed and approved by Apple: * Driver for RTL815X that works with my USB Ethernet adapter from RTL. The standard Apple driver refused to run at 1G, only at 100Mb. It'll be interesting to see if they update the drivers any time soon. * Tripmode that controls network I/O (I don't use it) * Karabiner Elements to handle my custom keyboard I use the (excellent) Karbiner-Elements to handle my keyboard and it has a kext that sets up a virtual keyboard and virtual pointer as HID devices. So I'm guessing that's going to need to be converted from a kext to something using the HIDDriverKit.