Subj : src/comio/comio_win32.c To : Git commit to main/sbbs/master From : Deucе Date : Mon Feb 06 2023 08:58 pm https://gitlab.synchro.net/main/sbbs/-/commit/afbff43c40e4bead84c0cbdc Modified Files: src/comio/comio_win32.c Log Message: Handle COM10 and above. https://support.microsoft.com/en-us/topic/howto-specify-serial-ports-larger-than-com9-db9078a5-b7b6-bf00-240f-f749ebfd913e Obviously, it needs the be \\.\COM12 .