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Black DB9 female to RJ45 female modular adapter

STARTECH

STARTECH GC98FF DB9 to RJ45 modular adapter

SKU CH-G6G3-X6HJF MPN GC98FF

Converts a DB9 male connector to RJ45 female for modular RS232, RS422 and RS485 serial links

  • Adapter typeDB9 to RJ45
  • DetailsConnectors: DB9 Female, RJ45 Female
  • Key featuresDB9 Female to RJ45 Female Adapter
  • Product weight0.1
  • Convert DB9 male to RJ45 female for flexible serial links
  • Supports RS232, RS422 and RS485 modular wiring
  • Build custom serial cables without soldering
  • Female-to-female design mates with standard DB9 and RJ45 plugs
  • Lightweight black adapter weighs 0.1 lb

Convert DB9 to RJ45 serial

The StarTech GC98FF is a modular adapter that converts a DB9 male connector into an RJ45 female connector. It supports RS232, RS422 and RS485 serial connections for custom wiring scenarios. The unit ships new in black with a single adapter in the package.

Check connector gender and pinout

Verify that your existing cable or device presents a DB9 male plug to mate with the adapter's DB9 female side. Confirm the RJ45 female jack matches the modular plug on your patch cable or terminal equipment. No drivers or software are required for the passive conversion.

Passive design uses no power

The adapter draws no electricity and adds no active components to the signal path. Heat and noise are non-existent because the unit contains only internal wiring between the DB9 and RJ45 contacts. It weighs approximately 0.1 lb and fits inline without external power.

How it compares

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

Price $11.99
Cheaper than about 87% of the 89 comparable items (median $18.99).

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Specifications

Product
Brand nameStarTech.com
Model nameGC98FF
Adapter typeDB9 to RJ45
Size & build
Shipping weight0.02 kg
Package size89 × 89 × 19 mm

Questions about this item

Does the GC98FF adapter include any cables, or must I supply my own DB9 and RJ45 cables?

The package contains only the DB9-to-RJ45 modular adapter itself; both a DB9 male cable and an RJ45 male cable must be provided separately.

The adapter is listed for RS232, RS422 and RS485 — how do I know which wiring scheme my device needs?

The GC98FF is a straight-through pin adapter; the RS232, RS422 or RS485 wiring is determined by the cables you attach, so match the cable pin-out to your equipment's requirements.

What does the DB9-to-RJ45 conversion actually do for a serial link in practice?

It lets you connect a DB9 serial port to standard RJ45 cabling, enabling longer runs with Cat5e/6 cable while keeping the same RS232, RS422 or RS485 signalling.

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