9-102974-0-20 vs 9-102974-0-21 vs 9-102974-0-22

 
PartNumber9-102974-0-209-102974-0-219-102974-0-22
DescriptionCONN HEADER R/A 20POS 2.54MMCONN HEADER R/A 21POS 2.54MMCONN HEADER R/A 22POS 2.54MM
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