The substrate is in {TAIL ~ thermal communication} with a plurality of N independently controllable components and {HEAD ~ a plurality} of input output contacts for connecting the substrate to an external controller 
The substrate is in { TAIL ~ thermal communication } with a plurality of N independently controllable components and { HEAD ~ a plurality } of input output contacts for connecting the substrate to an external controller
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH