StarTech DB9 (F) to DB25 (M) Serial Adapter

Name: Serial Cable Adapter StarTech DB9 AT925FM
Brand: StarTech
SKU: 4110740
Price: 9.99 EUR
Availability: InStock

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Serial Cable Adapter StarTech DB9 (female) to DB25 (male) beige

StarTech DB9 (F) to DB25 (M) Serial Adapter Photo 1

StarTech DB9 (F) to DB25 (M) Serial Adapter Photo 2

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Short description

StarTech serial cable adapter converts a DB9 female connector to a DB25 male connector. Beige-colored passive adapter for serial (RS-232) connections, suitable for connecting devices with differing 9-pin and 25-pin D-sub ports. Useful for legacy equipment, industrial interfaces, modems, routers and serial peripherals requiring pin adaptation.

Available for order: 5 pcs.

Warranty: 2 Years

SKU: 4110740

Manufacturer: StarTech

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Deliver the order:

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Customer service center

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

09.07.2026 {{selectedOffer.officeDeliveryString}}

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From 4.99 € (Weight: 0.04 kg)

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From 1.99 €

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Payment Methods:

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Product information

Description

StarTech DB9 (female) to DB25 (male) serial cable adapter is a passive D-sub adapter designed to convert a 9-pin serial connection to a 25-pin male serial connection. The beige adapter provides a compact, low-profile way to adapt between legacy RS-232 devices and equipment that use a DB25 connector without altering signal wiring or requiring additional drivers or power.

Advantages

This adapter offers simple mechanical pin adaptation for RS-232 serial links, enabling immediate physical compatibility between devices with DB9 and DB25 ports. Its passive construction means no signal conversion electronics are required, and the compact D-sub shell preserves connector integrity while minimizing desk or panel space. The neutral beige finish matches many legacy devices and equipment racks.

Suitable for

Connecting legacy computers, industrial controllers or terminals with DB9 to equipment with DB25 ports
Linking modems, routers or serial peripherals that require a DB25 male connection
Laboratory or workshop setups where temporary or permanent serial pin adaptation is needed

Key specifications

Connector A: 9-pin female D-sub (DB9)
Connector B: 25-pin male D-sub (DB25)
Color: beige
Passive adapter — no power or active signal conversion
RS-232 serial interface compatibility
Compact, low-profile D-sub metal shell

How to use

Align the DB9 female side of the adapter with the DB9 male port on your device and gently push until the connector seats. Attach the DB25 male end to the receiving DB25 female port, ensuring pins align and the shell engages. Secure any thumbscrews or retention hardware on your device connectors if present. No drivers, software, or external power are required; after physical connection, verify serial settings (baud rate, parity, stop bits, flow control) in your equipment or terminal software to ensure proper communication.

Usage recommendations

Use this adapter when you need a straightforward physical interface change between DB9 and DB25 serial ports. Avoid using the adapter in environments where active signal conversion or isolation is required; for long cable runs consider checking signal integrity and grounding. When connecting to sensitive or mission-critical equipment, confirm pinouts between devices to prevent mismatched control signal wiring.

Specifications

Weight:: 0.041 kg
Product colour:: Beige

All features

Weight & dimensions

Weight:: 0.041 kg

Packaging data

Package weight:: 46 g
Package depth:: 0.07 mm
Package height:: 125 mm
Package width:: 90 mm

Features

Product colour:: Beige
Connector 1 gender:: Male
Connector 2 gender:: Female

Other features

Connector(s):: DB9 Female, DB25 Male

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Customer questions

FAQ

How much does the StarTech DB9 (F) to DB25 (M) Serial Adapter cost, and is it available for purchase?

The price is 9.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 09.07.2026 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: 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, 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.

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