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Black RJ45 male to DB9 female modular adapter, compact rectangular shape

Cables To Go

Cables To Go 02943 RJ45 to DB9 Female Modular Adapter Black

SKU CH-7PGW-ET27P MPN 02943

Connects an RJ45 cable to a DB9 serial port for RS232 terminal links using standard twisted-pair wiring

  • Adapter typeRJ-45 to DB-9
  • DetailsConnector 1: RJ45 Female Connector 2: DB9 Female Color: Blac
  • Key featuresUsing modular adapters with inexpensive silver satin or flat
  • Connects RJ45 to DB9 serial equipment
  • Female-to-female gender for straight-through wiring
  • Black finish aids quick cable identification
  • Lightweight 0.05 lbs fits tight panels
  • Supports RS-232 links up to 232 standard

RJ45 to DB9 Female Adapter

The C2G 02943 modular adapter converts an RJ45 female port to a DB9 female serial connector. It enables RS-232 links between desktop terminals and central patch panels or multiplexers. The black housing provides clear visual identification in structured cabling installations. This adapter suits IT professionals managing legacy serial equipment in client-server environments.

RS-232 Over Twisted Pair Wiring

The adapter works with inexpensive silver satin or flat oval twisted pair cable to extend serial connections. Signal integrity depends on the quality and length of the twisted pair wire used in the run. No active electronics are present, so the link remains passive and unamplified. Installers must verify pin assignments match the host equipment before deployment.

Replaces Custom Serial Patch Cords

This adapter removes the need for fixed-length DB9 patch cables in wiring closets and office drops. It upgrades rigid point-to-point wiring to a modular scheme that simplifies moves and changes. The jump is worth it when terminal locations shift frequently or when colour-coded management reduces troubleshooting time. Buyers needing powered signal boost or protocol conversion should look elsewhere.

How it compares

Measured against everything we stock in USB-C Multiport Adapters, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 97% of the 89 comparable items (median $18.99).

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Specifications

Product
Brand nameC2G
Model name02943
Adapter typeRJ-45 to DB-9
Size & build
Shipping weight0.02 kg
Package size141 × 97 × 23 mm

Questions about this item

How do I decide whether this RJ45-to-DB9 adapter suits my wiring plan?

Choose it when you need a female DB9 RS-232 port on the end of a standard RJ45 cable run to a patch panel or MUX.

What does the RS-232 label mean once the adapter is installed?

It confirms the DB9 side carries standard serial signals so a dumb terminal or serial device can talk to the host over the twisted-pair link.

Which interface standard does the RJ45 connector use and what does it limit?

The RJ45 connector accepts ordinary 8-position modular plugs, limiting the connection to the eight conductors available in silver satin or flat oval twisted-pair wire.

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