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Pre-Wired M4 Series

Pre-Wired M4 Series Enlarge this image
Product Resources
Part Number Part Numbers


  • Female 25-pair connectors are oriented for top cable entry and male 25-pair connectors are oriented for bottom cable entry.
  • All 25-pair connectors are equipped with Siemon's patented universal connector holddown. The connector holddown is black.
  • Custom configurations available. Please contact our Customer Service Department for information and minimum order quantities.

Part Numbers

S66M4-2W (Picture) Pair Capacity: 50 (bridged) Two female 25-pair connectors
S66M4-4W (Picture) Pair Capacity: 100 (unbridged) Four female 25-pair connectors
Add "B" for back mounted connector (not shown), add "M" for male connector. Please call for connector/block compatibility.

all connector options not available for all blocks.

Because we continuously improve our products, Siemon reserves the right to change specifications and availability without prior notice

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