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Monoprice DB9 male to RJ45 modular adaptor, 45

Monoprice Inc.

Monoprice Inc. DB9M RJ45 Modular Adaptor HDMI Cable

SKU CH-8AHN-XYKYM

DIY adapter lets you extend serial DB9 links over eight-conductor Cat5 cable

  • DIY solution extends Serial connections over Cat5
  • 8-pin adapter converts DB9 to RJ45
  • Lifetime warranty included with purchase
  • New condition ready for immediate use

DIY DB9 over Cat5 extension

This adaptor lets you run a serial DB9 connection through an eight-conductor Cat5 cable for custom wiring jobs. It provides a straight 8-pin interface that maps the DE9 signals onto standard twisted-pair conductors. The part is aimed at installers and hobbyists who need to extend legacy serial links without buying pre-made extenders. It ships new with a lifetime warranty from the manufacturer.

8-pin headroom and limits

The eight conductors give enough paths for the full DE9 pinout plus a spare line for ground or flow control. Runs beyond the 45 metre area where Cat5 signal quality drops off will need active buffering or a shorter cable. Builders who need shielded connectors, RJ45 jacks with integrated magnetics, or USB serial conversion will need different hardware.

How it compares

Measured against everything we stock in HDMI & Mini HDMI Cables, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 98% of the 785 comparable items (median $17.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Will the 8-pin adapter work with my existing Cat5 cable to extend a DB9 serial connection?

Yes, the modular adaptor is designed as a DIY solution that uses an 8-conductor Cat5 cable to extend DB9 serial links.

How can I verify the DB9M RJ45 adaptor is functioning correctly after I connect it?

After wiring the 8-pin adapter to your Cat5 cable, check that the serial device communicates without errors across the extended link.

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