Latest security update (10.15.7) killed my Keyspan serial to usb USA HS-19
I have a Vantage Vue weather console connected to my iMac using a Keyspan serial to USB adapter. After updating to OS 10.15.7, the iMac is no longer getting data from the Vue. I tried re-installing the last firmware for the Keyspan but still no go. It was working fine before the upgrade. Any ideas? TIA
iMac 27″, macOS 10.15