| Input Matrix | Contains the matrix whose size will be the size of the identity matrix . | False | Only visible when the Identity size source property is Matrix. | Input | Matrix port |
| Row count | The number of rows in the identity matrix. | True | Only visible when the Identity size source property is Scalar and the corresponding property is exposed. | Input | Analog port |
| Column count | The number of columns in the identity matrix. | True | Only visible when the Identity size source property is Scalar and the corresponding property is exposed. | Input | Analog port |
| Identity | The resulting identity matrix. | False | | Output | Matrix port |