MANHATTAN DB25 (D-Sub 25) male to RJ45 female adapter

MANHATTAN DB25 (D-Sub 25) male to RJ45 female adapter converts a 25-pin D-Sub male connector to an 8P8C (RJ45) female jack. The adapter provides a compact interface for routing signals between equipment with a DB25 port and devices or patch cables that use modular RJ45 connectors. It is suitable for serial, parallel or custom pinout applications where a DB25-to-RJ45 mapping is required and enables quick field connections without modifying existing cabling.

Advantages

This adapter offers a space-saving, metal-backed D-Sub housing that maintains a secure mechanical connection while exposing a standard RJ45 jack for modular cabling. It supports straightforward pin mapping between DB25 and 8P8C terminations, reducing the need for soldering or rewiring. The compact form factor and durable connectors make it convenient for temporary setups, lab work, or on-site troubleshooting where a reliable DB25-to-RJ45 interface is needed.

Suitable for

• Routing RS-232 or parallel signals from DB25-equipped equipment to modular RJ45 cabling
• Custom pinout adapters and field conversions where DB25-to-RJ45 mapping is used
• Temporary connections in labs, workshops, or installation and testing environments
• Connecting legacy devices with D-Sub 25 ports to network-style patch panels or breakout cables

Key specifications

• Connector A: D-Sub 25-pin male (D-Sub 25 / DB25 male)
• Connector B: RJ45 (8P8C) female modular jack
• Compatibility: Designed for signal routing and pin mapping between DB25 and RJ45 terminations
• Construction: Compact adapter body with secure mechanical D-Sub fastening
• Usage environment: Intended for serial, parallel and custom pinout applications; not for Power over Ethernet or Ethernet PHY standard guarantees

How to use

Align the DB25 male connector with the DB25 female port on your device and secure it using the D-Sub fastening screws as applicable. Insert a standard RJ45 plug into the adapter's RJ45 jack until it latches. Verify the pinout mapping between the DB25 equipment and the RJ45 cable to ensure signal compatibility before powering devices. Use appropriate cable shielding and grounding practices in electrically noisy environments to maintain signal integrity.

Usage recommendations

Confirm the required DB25-to-RJ45 pinout for your specific equipment or cable assembly before use. This adapter provides a physical conversion but does not perform protocol conversion; ensure signal levels and protocol compatibility (for example RS-232 vs. TTL) are met through proper interfaces or converters if needed.