= Description This is the model present by default in MG5_aMC from version 1.4.0 to 2.4.3. The model is actually SLHA2 but came with an internal support in MG5_aMC to handle SLHA1. Therefore, the user card is SLHA1. Version 2.5.0 introducing Py8 and since PY8 supports SLHA2, the model was replaced by MSSM_SLHA2 where everything is SLHA2 from beginning to end.