DB25 to RJ45 Modular Adapter - F/F

Convert a DB25 male connector to an RJ45 female connector

Product ID: GC258FF

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In stock: CA: 15 | US: 4723

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Our DB25F to RJ45F Adapter is used for modular RS232, RS422, and RS485 connections. Backed by lifetime warranty.


  • Used for modular RS232, RS422, and RS485 connections

Partner Numbers

  • Ingram Micro Canada 11825K
  • Tech Data Canada 5Z8240
  • SYNNEX Canada 9059970
  • ASI Distribution Canada 157756
  • UPC 065030773485


Warranty Information Warranty Lifetime
Connector(s) 1 - Connector A DB-25 (25 pin, D-Sub)
1 - Connector B RJ-45
Packaging Information Package Height 0.0 in [0.1 mm]
Package Length 4.9 in [12.5 cm]
Shipping (Package) Weight 1.0 oz [27.0 g]
Package Width 3.5 in [9.0 cm]
Physical Characteristics Product Height 0.6 in [1.6 cm]
Product Length 3.3 in [8.5 cm]
Weight of Product 0.9 oz [24.5 g]
Product Width 2.2 in [5.5 cm]
Color Black
What's in the Box 1 - Included in Package DB25 to RJ45 Serial Port Adapter


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Frequently Asked Questions

Before You Buy

A straight-through serial cable is the most common type of serial cable, used to connect a Data Terminal Equipment (DTE) device (for example, a computer) to a Data Communications Equipment (DCE) device (for example, a modem). The pinout of the serial connectors on both sides of the cable are exactly the same with a straight-through serial cable.

A null modem serial cable (frequently called a crossover cable) is used to connect two DTE devices together without the use of a DCE device in between. For this to happen, the Transmit (TXD) and Receive (RXD) pins on one of the serial connectors are flipped.

To confirm the type of serial cable that is required for your device or configuration, refer to the information provided by the manufacturer.

Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

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