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Home Electronics Adapters & Cables StarTech.com AT925FF DB9 Female to DB25 Female RS232 Adapter

StarTech.com AT925FF DB9 Female to DB25 Female RS232 Adapter

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The StarTech.com AT925FF is a compact DB9-to-DB25 serial adapter designed to convert a 9-pin female serial connection to a 25-pin female port. It is intended for organizations maintaining legacy RS-232 equipment and needing a practical connector-format solution without replacing existing serial hardware. The adapter is part of StarTech.com's legacy serial connectivity range and is particularly useful for IT service, industrial, telecom, and specialized equipment environments.

OVERVIEW

  • The AT925FF converts a DB9 female serial connection to a DB25 female interface, helping organizations connect compatible legacy RS-232 equipment with different connector formats. Compatibility: suitable for compatible DB9/DB25 serial interfaces; verify pinout and device requirements. Model comparison: AT925FF uses female DB9 and female DB25 connectors; choose AT925FM when a male DB25 connection is required. 

USE CASES

  • Legacy RS-232 equipment: Adapt compatible 9-pin and 25-pin serial interfaces without replacing existing hardware.
  • IT maintenance: Give technicians a compact connector solution when servicing older computers, peripherals, and infrastructure equipment.
  • Industrial equipment: Connect compatible serial controllers and specialized equipment where DB9 and DB25 interfaces need to be bridged.
  • Telecom infrastructure: Support legacy communications equipment using compatible RS-232 serial ports.
  • Serial peripherals: Help integrate compatible printers, terminals, and other legacy serial devices with different connector formats.
  • Laboratory equipment: Adapt compatible test and measurement equipment that uses DB9 or DB25 serial connections.
  • Field service: Keep a small connector adapter available in technician toolkits for legacy equipment troubleshooting.
  • Infrastructure upgrades: Extend the useful life of compatible serial hardware when replacing the host system or cabling is unnecessary.

KEY FEATURES

  • DB9 Female Connector: Provides connection to compatible 9-pin male serial ports.
  • DB25 Female Connector: Provides a 25-pin female interface for compatible DB25 equipment or cables.
  • RS-232 Serial Connectivity: Supports compatible RS-232 applications without requiring an electronic signal conversion.
  • Compact Adapter Design: Provides connector-format conversion without requiring a full-length serial cable.
  • Female-to-Female Configuration: Solves specific connector-gender mismatches where both connected interfaces require female ports.
  • Easy Installation: Provides a straightforward physical connection solution with no driver installation required.
  • Legacy Equipment Support: Helps organizations continue using compatible older serial equipment instead of replacing it solely because of connector differences.
  • Lifetime Warranty: Provides long-term product support for business and infrastructure deployments.

TECHNICAL SPECIFICATIONS

  • Brand: StarTech.com
  • Product Model: AT925FF
  • Product Type: DB9 to DB25 Serial Cable Adapter
  • Serial Standard: RS-232
  • Connector A: 1 × DB9 / 9-pin D-Sub Female
  • Connector B: 1 × DB25 / 25-pin D-Sub Female
  • Connector Configuration: Female to Female
  • DB9 Connector: Female
  • DB25 Connector: Female
  • Product Length: 6.0 cm / 2.4 in
  • Product Width: 5.7 cm / 2.2 in
  • Product Height: 1.6 cm / 0.6 in
  • Product Weight: 42 g / 1.5 oz
  • Color: Beige
  • Package Quantity: 1
  • Included: 1 × DB9 to DB25 Serial Cable Adapter
  • Drivers Required: No
  • Warranty: Lifetime
  • Certifications: RoHS, WEEE, CE
  • Compatibility: Compatible DB9/DB25 RS-232 interfaces; verify pinout before deployment

Why Choose This Product?

  • Corrects DB9/DB25 connector mismatch: Helps connect compatible serial equipment with different physical connector formats.
  • Female-to-female configuration: Specifically addresses installations requiring female connectors on both sides.
  • No electronics required: Provides a simple physical connector adaptation rather than adding an active conversion device.
  • Useful for legacy infrastructure: Helps extend the service life of compatible RS-232 equipment.
  • Compact deployment: Takes up less space than using an additional long serial cable.
  • Easy for technicians: Suitable for keeping in IT and field-service spare kits.
  • Broad application potential: Useful across compatible industrial, telecom, laboratory, and enterprise serial environments.
  • Long-term support: Backed by StarTech.com's lifetime warranty.

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