DB25 Female to RJ45 Female Modular Adaptor
Our DB25 Female to RJ45 Female Adaptor offers a versatile and cost-effective solution for running serial data over long distances using standard Cat5 or Cat6 Ethernet cabling. This modular connector is ideal for IT professionals and system integrators who need to bridge the gap between legacy DB25 serial hardware and modern structured cabling systems.
Key Performance Features
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Fully Configurable Pinout: Features un-terminated, color-coded flying leads that allow you to manually map the internal wiring to meet the specific RS-232, RS-422, or RS-485 requirements of your hardware.
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Standard RJ45 Interface: Equipped with a high-quality RJ45 female port (8P8C), enabling the use of inexpensive Ethernet patch cables for signal transmission.
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Tool-Free "Snap-In" Assembly: Designed for rapid deployment; simply push the pre-crimped pins into the desired holes on the DB25 block until they lock securely into place.
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Secure Industrial Connection: Integrated knurled thumbscrews provide a hand-tightened, vibration-resistant connection to your serial ports, ensuring constant uptime.
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Rugged Protective Housing: The modular unit is encased in a durable beige PVC shell that protects sensitive internal connections and provides built-in strain relief.
Technical Specifications
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Connector A: DB25 (D-Sub 25-pin) Female.
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Connector B: RJ45 (8P8C) Female.
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Internal Leads: 8 Color-coded flying leads with pre-crimped pins.
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Hardware: Dual steel knurled thumbscrews.
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Color: Industrial Beige.
Typical Applications
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Server Console Access: Connecting legacy server hardware or high-density network switches to a terminal or console server via network cabling.
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Industrial Automation: Interfacing with older PLC units, CNC controllers, and manufacturing machinery that utilize DB25 serial ports.
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AV Control Systems: Extending serial control signals to professional matrix switchers, lighting boards, and commercial projectors.
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Legacy Printer Support: Linking DB25-based parallel or serial printers to computers over extended distances using existing building wiring.
Top 3 Customer Questions & Concerns þ
þ How do I know which wires to use? Because DB25 equipment can have very different wiring standards, you should consult your device's technical manual. Use the color-coded leads to align with the specific TX, RX, and Ground pins your hardware requires.
þ Can I remove a pin if I make a mistake? Yes. While the pins lock firmly, you can use a small precision screwdriver or a pin extraction tool to depress the locking tab and slide the pin back out for reconfiguration.
Will this work for a Parallel (LPT) port? While it fits the physical port, this is primarily a modular signal adapter. It is designed for serial data applications and does not contain the logic to convert a parallel printer signal into a standard network signal.



