I know there are only a couple of people interested in these, but this is probably the place to post this to get to who might want it. These units will take bus and tag in and allow one to run over a distance via fibre optic. Might be useful for a pile which includes such. hopefully the conflicting suffix numbers does not mean these do not have at least one pair that could work given the fibre optic connection. Jim ibm 3044-D01 extender link 5874992954 ibm 3044-C02 extender link 5874993303 ibm 3044-C01 extender link 290051556365