@tino_ber48 Oops, yes, you're right, two of the IO ports are input only. So 12 inputs on the Mini 5+. Plus 4 on the 1HCL.
If you need more expansion, I'd probably go with a 3HC, which has 6x IO with in and out, plus 3x larger stepper drivers. See https://docs.duet3d.com/Duet3D_hardware/Duet_3_family/Duet_3_Expansion_3HC
Ian