DB25 to RJ45 Modular Adapter StarTech.com GC258MF

Name: DB25 to RJ45 Modular Adapter GC258MF
Brand: StarTech
SKU: 10444658
Price: 6.99 EUR
Availability: InStock

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DB25 to RJ45 Modular Adapter StarTech.com GC258MF Connector 1 DB-25 Connector 2 RJ-45

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Offer for legal entity, cashless payment. Why is an item available only for a legal entity?
This is due to long delivery times and limited product warranties.

Short description

The StarTech.com DB25 to RJ45 Modular Adapter allows for seamless connection between DB-25 and RJ-45 interfaces. It is designed for reliable performance and versatility in various applications. The grey adapter is compact and easy to use, making it suitable for both professional and personal use.

Available at price 6.99 €: 40 pcs.

Total available for order: 220 pcs.

Warranty: 2 Years

SKU: 10444658

Manufacturer: StarTech

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Deliver the order:

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to the Customer Service Center at Kengaraga 2b, Riga

22.06.2026 {{selectedOffer.officeDeliveryString}}

free

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Customer service center

2b. Kengaraga str., Riga, Latvia, LV-1063

22.06.2026 {{selectedOffer.officeDeliveryString}}

free

Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!

29.06.2026 {{selectedOffer.courierDeliveryString}}

From 4.99 € (Weight: 0.02 kg)

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From 1.99 €

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Payment Methods:

Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay

Available for private customers at price 10.99 €: 40 pcs.

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Product information

Description

This StarTech.com DB25 to RJ45 modular adapter (model GC258MF) converts a DB-25 female interface to an RJ45 female modular jack, enabling connection between equipment using DB-25 and devices or cables terminated with an RJ45 plug. The compact grey adapter supports modular RS-232, RS-422, and RS-485 wiring and is built for durable, everyday use backed by StarTech.com's lifetime warranty.

Advantages

The adapter offers a compact, lightweight design that simplifies interconnection between DB-25 and RJ45-terminated cabling without soldering or rewiring. It supports multiple serial standards (RS-232, RS-422, RS-485), provides a stable mechanical connection, and is produced by StarTech, which provides long-term warranty coverage.

Suitable for

Connecting legacy DB-25 serial equipment to RJ45-terminated cabling
Serial communication setups using RS-232, RS-422 or RS-485
Field or lab environments where quick adapter-based conversions are needed

Key specifications

Manufacturer: StarTech.com
Model: GC258MF
Connector A: 1 × DB-25 (female)
Connector B: 1 × RJ-45 (female, modular)
Supported protocols: RS-232, RS-422, RS-485 (modular wiring)
Color: Grey
Warranty: StarTech.com Lifetime warranty
EAN: 0065030772099

How to use

Insert an RJ45 plug into the adapter's RJ45 female jack and connect the DB-25 female end to a male DB-25 connector on the device or cable. Ensure that the wiring and pinout of the RJ45 cable match the serial standard required by your equipment (RS-232/RS-422/RS-485). Verify secure physical connections before powering devices and beginning communication.

Usage recommendations

Check the pinout mapping and serial protocol compatibility for your equipment before use. Use appropriate shielded cabling for longer runs or electrically noisy environments and refer to StarTech.com documentation for any specific wiring diagrams related to GC258MF.

Specifications

Weight:: 0.0225 kg
Connector 1:: DB-25
Connector 2:: RJ-45
Product colour:: Grey

All features

Weight & dimensions

Weight:: 0.0225 kg
Height:: 16 mm
Width:: 55.2 mm
Depth:: 85 mm

Packaging data

Package weight:: 25 g
Package depth:: 125 mm
Package width:: 90 mm

Features

Plug and Play:: Yes
Product colour:: Grey
Connector 1:: DB-25
Connector 2:: RJ-45
Connector 1 gender:: Male
Connector 2 gender:: Female

Other features

Connector(s):: DB25 Male, RJ45 Female

Certificates

Certification:: CE, REACH

Sustainability

Sustainability certificates:: RoHS

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Instructions

startech-GC258MF-10444658.pdf

Description

Instructions

startech-GC258MF-10444658.pdf

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Warehouse	Stock	Delivery to the store	Store Price
WH357	40	30.06.2026	10.99 €
WH354	40	01.07.2026	12.49 €
WH94	40	22.06.2026 Best delivery	12.49 €

Available only for legal entities
Warehouse	Stock	Delivery to the store	Store Price
EU9	40	22.06.2026 Best delivery	6.99 € Best price
WH109	40	08.07.2026	7.99 €
EU6	20	22.06.2026 Best delivery	25.99 €

10.99 €

Stock: 40

Delivery Date: 30.06.2026

Warehouse: WH357

12.49 €

Stock: 40

Delivery Date: 01.07.2026

Warehouse: WH354

12.49 €

Stock: 40

Delivery Date: 22.06.2026 Best delivery

Warehouse: WH94

Available only for legal entities

6.99 €

Stock: 40

Delivery Date: 22.06.2026 Best delivery

Warehouse: EU9

7.99 €

Stock: 40

Delivery Date: 08.07.2026

Warehouse: WH109

25.99 €

Stock: 20

Delivery Date: 22.06.2026 Best delivery

Warehouse: EU6

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Customer questions

FAQ

How much does the DB25 to RJ45 Modular Adapter StarTech.com GC258MF cost, and is it available for purchase?

The price is 6.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 220 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 22.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All StarTech products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized StarTech service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: weight, connector 1, connector 2, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for DB25 to RJ45 Modular Adapter StarTech.com GC258MF?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

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