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Slimline Serial Loopback Plug, DB9 Female DMA021T



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Product Datasheet

These slimline loopback testers can help diagnose problems with serial or parallel interfaces. Two options to plug into your PC port - DB25 male and DB9 female.


  • Slimline design reduces leverage strain on computer ports
  • UL grade 94V-0 connector insulator satisfies flammability requirements
  • Gold plated contacts provide reliable connections with repeated mating cycles
  • Helps diagnose problems with PC interface ports


  • RS-232
  • Test
  • RS-422
  • Serial