The 7210 SAS-R6, 7210 SAS-R12, 7210 SAS-T, 7210 SAS-Mxp, 7210 SAS-Sx/S 1/10GE and 7210 SAS-Sx 10/100GE platforms, as described in the previous section, do not support any physical removable MDAs. Software uses the concept of MDA internally (as a logical entity) to represent the ports and the MDA type is either auto-provisioned on bootup or auto-provisioned automatically based on the configured IMM type.