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Comment by Brian_K_White

8 hours ago

Similarly, it's DE9 not DB9

Yep, and these days ribbon cables are rare, instead we have Flexible Flat Cables or Flexible Printed Circuits. Ribbon cables are the old cables like IDE hard drives used, with insulation displacement connectors, while FFCs and FPCs are much thinner and use integral connection schemes (tinned pads on the cable itself get clamped by some sort of connector on a PCB).