At least two standard USB-A ports (one for the security key dongle, one for the panel connection cable).

Hi everyone, I’m currently working on a retrofit project where we need to make some minor logic changes to an existing Simplex 4100ES panel. I have the laptop and the USB-to-serial adapter ready to go, but I’m hitting a wall trying to locate the actual programming software.

: Older 4100U legacy panels require different programming environments compared to modern 4100ES systems.