Should be able to go to 7, 1-3 on the belkin and 4a,4b,4c,and 4d on a mechanical when the belkin is selected for printer 4. Any control signals to keep the belkin alive will feed back through the mechanical.
DICLAIMER:
it may also depend on what the belkin talks tothe printers with. If it is a standard PC printer cable, it should be OK. If it is an Amphenol to Amphenol 36 conducter then the mechanical switch box would need to be the 36/36 type which are probably much more expensive.
Ed Fair
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