STARTECH.COM | GC9SF

Slimline DB9 Female to Female Gender Changer

Join two DB9 male serial connectors with a compact, passive female-to-female gender changer for tidy equipment and cable integration.

DB9 female on both ends

Connects two DB9 male interfaces without replacing an otherwise suitable serial cable.

Slimline footprint

The compact housing helps reduce bulk behind equipment, inside cabinets and in field toolkits.

Passive pin-through connection

Adds no software layer, power requirement or active protocol conversion.

Practical service spare

A straightforward way to resolve connector-gender mismatches during installation or maintenance.

Why this model fits the job

Join two DB9 male serial connectors with a compact, passive female-to-female gender changer for tidy equipment and cable integration. The design focuses on the exact connector, signalling and compatibility requirements shown in the current StarTech.com specification, helping buyers select the right part without relying on broad compatibility claims.

Compatibility checklist

Confirm both devices or cables present DB9 male connectors.
Check that the existing cable has the required straight-through or crossover wiring; this adapter does not create a null-modem crossover.
Confirm the connected equipment uses the same serial signalling standard and pin assignment.

Common applications

Join two male-ended DB9 serial cables or interfaces
Keep a compact gender-change spare in a technician toolkit
Resolve connector-gender mismatches in control and legacy serial installations

DeviceDeal purchase confidence

Supplied by DeviceDeal for Australian customers with local purchasing support, a tax invoice and the verified Lifetime StarTech.com manufacturer warranty.

Frequently asked questions

What connectors are on GC9SF?

It provides a DB9 female connector at each end.

Is this a null-modem adapter?

No. It changes connector gender and does not introduce a null-modem crossover.

Does it convert one serial protocol to another?

No. It is passive and does not convert between RS-232, RS-422, RS-485 or other electrical standards.

Does it require drivers?

No drivers, software or external power are required.

Will it work with any DB9 device?

The connectors may fit, but the connected equipment must still use a compatible signal standard and pinout.

How compact is it?

The current manufacturer specification lists 18 × 31 × 13mm (L × W × H).

What is included?

The package contains one slimline DB9 female-to-female gender changer.

What warranty applies?

StarTech.com backs GC9SF with a lifetime manufacturer warranty.

Not sure this is the right product for your setup? Visit the DeviceDeal Buying Guides.

(GC9SF)

Features and highlights

Two DB9 female connectors
Slimline serial gender changer
Passive pin-through connection
No power supply, software or drivers required
Not a null-modem adapter and does not convert serial standards
Black housing
Product dimensions: 18 × 31 × 13mm (L × W × H)
Product weight: 9.5g
One gender changer supplied
Lifetime StarTech.com manufacturer warranty

Compatibility check: Confirm both devices or cables present DB9 male connectors.

Specifications

Product type	Slimline serial gender changer
Connector A	1 × DB9 female
Connector B	1 × DB9 female
Wiring function	Passive pin-through gender change
Protocol conversion	None
Null-modem crossover	No
Colour	Black
Dimensions	18 × 31 × 13mm (L × W × H)
Product weight	9.5g
Power / drivers	Not required
Package quantity	1 gender changer
Warranty	Lifetime

SKU	GC9SF
Barcode #	65030777537
Brand	STARTECH
Shipping Weight	0.0100kg
Shipping Width	0.001m
Shipping Height	0.012m
Shipping Length	0.009m

Warranty and Australian supply

GC9SF is supplied by DeviceDeal as an Australian-market product and carries the official Lifetime StarTech.com manufacturer warranty in Australia.

Keep your DeviceDeal tax invoice as proof of purchase. Warranty service is subject to StarTech.com terms, eligibility requirements and product assessment.