25-foot gray null modem cable with DB-9 female connectors showing both ends with blue pin configuration

Reliable DB-9 Serial Connection for Legacy System Integration

The StarTech.com null modem cable features robust DB-9 female connectors designed for secure data transmission between serial devices. With copper conductors and comprehensive shielding, this 25-foot cable ensures consistent signal integrity even over longer distances. The cross-wired configuration enables direct communication between two serial devices without the need for a null modem adapter.

Technical Specifications

  • Dual DB-9 female connectors for direct device-to-device connection
  • Shielded copper conductor construction for signal protection
  • 25-foot length for flexible installation options

Applications

  • Connecting legacy industrial equipment to modern systems
  • Serial data transfer between two PCs
  • Modem-to-PC communications in specialized environments
Close-up view of DB-9 female connector showing detailed pin layout and metal housing construction

Premium-Grade DB-9 Connector Engineering

Each DB-9 connector is precisely engineered with high-quality metal housing and secured with mounting screws for a stable connection. The strain relief design and durable gray PVC jacket protect the internal wiring from daily wear and tear. The blue-coded pin configuration ensures proper orientation during installation.

Technical Specifications

  • Metal-housed DB-9 connector with mounting screws
  • Strain relief design for cable durability
  • Color-coded pin configuration for easy identification

Applications

  • Mission-critical industrial equipment connections
  • Permanent installation in server rooms
  • Laboratory equipment integration

Product details

General Information
Manufacturer

StarTech.com

Manufacturer Part Number

SCNM9FF25

Brand Name

StarTech.com

Product Name

25ft Cross Wired Serial Null Modem Cable

Packaged Quantity

1

Product Type

Data Transfer Cable

Technical Information
Cable Type

Serial

Cable Length

25 ft

Connector Type on First End

DB-9 Serial - Female

Connector Gender on First End

Female

Connector on First End Details

1 x 9-pin DB-9 Serial - Female

Connector Type on Second End

DB-9 Serial - Female

Connector Gender on Second End

Female

Connector on Second End Details

1 x 9-pin DB-9 Serial - Female

Conductor

Copper

Shielding

Yes

Device Supported

Modem
PC

Physical Characteristics
Product Color

Gray

Weight (Approximate)

0.67 lb

Miscellaneous
Environmentally Friendly

Yes

Environmental Certification

RoHS
REACH
WEEE

Country of Origin

China

Warranty
Limited Warranty

Lifetime

FAQs

What is the main purpose of the StarTech.com SCNM9FF25 cable?
The StarTech.com SCNM9FF25 is a cross-wired serial null modem cable designed for connecting two serial ports together or transferring files between PCs via serial connection. It features DB-9 female connectors on both ends and spans 25 feet in length, making it ideal for device-to-device serial communications and data transfer applications.
What are the connector types and length specifications of this cable?
This cable features DB-9 female connectors on both ends (9-pin serial connections), with a length of 25 feet (7.62 meters). Both connectors are identical female DB-9 serial ports, making it suitable for direct device-to-device connections without requiring additional adapters.
What devices are compatible with this null modem cable?
The SCNM9FF25 is specifically designed to work with PCs and modems that have DB-9 serial ports. It's compatible with any device featuring a standard 9-pin serial port connection, allowing for direct PC-to-PC connections or PC-to-modem configurations for data transfer and communication purposes.
What are the build quality and durability features of this cable?
The cable is constructed with copper conductors and features protective shielding to ensure reliable signal transmission and reduce electromagnetic interference. It's built to professional specifications with a gray exterior finish and weighs approximately 0.67 lb. The robust construction is backed by StarTech.com's lifetime warranty, indicating high durability and build quality.
What environmental certifications does this cable have?
The StarTech.com SCNM9FF25 cable is environmentally certified with RoHS, REACH, and WEEE compliance. These certifications ensure the product meets international environmental standards for electronic equipment, including restrictions on hazardous substances and proper electronic waste handling protocols.

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