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Beige DB9 male to DB25 female serial adapter

STARTECH

STARTECH AT925MF DB9 to DB25 Serial Adapter data adapter

SKU CH-78AR-1C19B MPN AT925MF

Converts a 25-pin serial port to a 9-pin male connector with a DB9 to DB25 male-to-female design

  • Adapter typeDB9 to DB25
  • First connector1 x DB-9 (9 pin, D-Sub) Male
  • Second connector1 x DB-25 (25 pin, D-Sub) Female
  • Product colorBeige
  • Key featuresThis DB25 to DB9 Serial Adapter converts a 25-pin serial por
  • In the box1 × 9 to 25 Pin Adaptor M/F
  • Connect legacy 25-pin serial equipment using a DB9 male interface
  • Convert a 25-pin serial port to a 9-pin male connector
  • Male DB9 to female DB25 gender changer for direct pin mapping
  • Beige D-Sub housing built for durable, reliable serial connectivity
  • Ready to use with no cable length to manage

DB9 to DB25 serial adapter

This beige adapter converts a 25-pin serial port to a 9-pin male connector. It suits technicians maintaining legacy equipment or connecting older peripherals to newer ports. The direct male-to-female design requires no extra cables or drivers.

Check port gender and pin count

Verify that the device you are adapting has a 25-pin female D-Sub port and that the cable or peripheral you are attaching uses a 9-pin male D-Sub connector. The adapter does not change signal voltage or protocol, so both ends must already speak the same serial standard.

Fits between legacy port and modern cable

The adapter sits inline, turning a DB25 female port into a DB9 male interface without adding cable length. It frees up the DB9 cable you already own for use with 25-pin hardware. No external power or software configuration is needed.

How it compares

Measured against everything we stock in Interface & Card Adapters, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 80% of the 354 comparable items (median $21.99).

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Specifications

Product
Brand nameStarTech.com
Model nameAT925MF
Product colorBeige
Adapter typeDB9 to DB25
Ports & slots
First connector1 x DB-9 (9 pin, D-Sub) Male
Second connector1 x DB-25 (25 pin, D-Sub) Female
Size & build
Cable lengthNo
Shipping weight0.05 kg
Package size99 × 88 × 17 mm
In the box
In the box1 × 9 to 25 Pin Adaptor M/F

Questions about this item

Does the AT925MF ship with any cables or only the adapter itself?

The package contains the DB9 male to DB25 female adapter only; no cables are included.

When should I choose the beige AT925MF over a different gender or colour variant?

Choose this model when you need to connect a 25-pin serial port to a 9-pin male connector in a beige finish matching legacy equipment.

What does the DB9-to-DB25 conversion actually do for my serial link?

It re-maps the 25-pin D-sub signals onto a 9-pin D-sub so legacy 25-pin devices can plug into a 9-pin port without rewiring.

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