StarTech. com SCNM925FM 10 ft Serial Null Modem Cable - DB-9 Female to DB-25 Male - Cross Wired with EMI Shielding
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Product Features
Technical Overview
This serial cable utilizes a null modem configuration, meaning the transmit and receive lines are crossed between the DB-9 female and DB-25 male connectors. This allows two DTE devices to communicate directly. The cable supports standard RS-232 serial communication, making it compatible with legacy hardware like modems, printers, and PCs that rely on serial ports for data transfer.
High-quality shielding throughout the cable prevents electromagnetic interference (EMI), ensuring stable data transmission even in electrically noisy environments. The connectors are precisely engineered with 9-pin and 25-pin configurations to match common serial port standards, providing a secure physical connection.
Relevant factors for this section include Cable Type, Cable Length, Connector Type on First End, Color Family. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Key Product Advantages
This cable combines robust construction with precise engineering to deliver reliable serial connectivity. The null modem design eliminates the need for additional hardware when connecting two DTE devices, simplifying setup and reducing points of failure.
These strengths make the product easier to deploy and manage in real environments, especially where reliability, usability, and day-to-day operational continuity matter. Notable benefits include Durable Build Quality, Interference Protection.
Durable Build Quality
Molded connectors with integrated strain relief protect against cable damage from bending or pulling, extending the cable's lifespan in active use environments.
- Prevents connector breakage
- Reduces wire fatigue
Interference Protection
Full cable shielding minimizes electromagnetic interference, ensuring clean signal transmission for critical data transfers between sensitive equipment.
- Maintains data integrity
- Suitable for industrial settings
Deployment / Use Cases
The SCNM925FM is ideal for connecting legacy serial devices in various professional and industrial scenarios. Its cross-wired null modem configuration makes it particularly useful for direct computer-to-computer communication, debugging serial equipment, or interfacing with older peripherals that lack modern connectivity options.
Common applications include linking PCs to serial printers for receipt printing, connecting industrial control systems to modems for remote monitoring, or establishing direct serial connections between networking equipment for configuration. The 10-foot length provides flexibility in positioning devices within rack cabinets, workbenches, or office setups.
Relevant factors for this section include Cable Type, Cable Length, Connector Type on First End, Color Family. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Physical Profile
The cable features a standard gray jacket that blends discreetly into technical environments. With a length of 10 feet (3.05 meters), it offers ample reach for most installation scenarios without excessive cable management. The lightweight design at 6.20 ounces (175.77 grams) makes it easy to route through racks or along walls. The molded connectors provide a secure fit while maintaining a low-profile connection that won't obstruct adjacent ports.
- Weight
- 6.20 oz (175.77 g)
- Length
- 10 ft (3.05 m)
Highlights
- 10-foot length provides flexible placement between devices
- DB-9 female to DB-25 male null modem configuration
- EMI shielding protects against electrical interference
- Molded connectors with strain relief enhance durability
- Supports modems, printers, and PCs with serial ports
- RoHS compliant and environmentally friendly
- Lifetime warranty for long-term reliability
- Gray color suits professional installations
Specifications
| Specifications | |
|---|---|
| Manufacturer | StarTech.com |
| Manufacturer Part Number | SCNM925FM |
| Brand Name | StarTech.com |
| Product Name | 10 Ft Serial Null Modem Cable 9-25 F/M |
| Packaged Quantity | 1 Each |
| Product Type | Data Transfer Cable |
| Technical Information | |
| Cable Type | Serial |
| Cable Length | 10 ft (3.05 m) |
| 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-25 Serial - Male |
| Connector Gender on Second End | Male |
| Connector on Second End Details | 1 x 25-pin DB-25 Serial - Male |
| Shielding | Yes |
| Device Supported | Modem,Printer,PC |
| Features | Strain Relief,Molded,EMI Protection |
| Physical Characteristics | |
| Color Family | Gray |
| Product Color | Gray |
| Weight (Approximate) | 6.20 oz (175.77 g) |
| Miscellaneous | |
| Environmentally Friendly | Yes |
| Environmental Certification | EU RoHS |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS) 2,Registration, Evaluation, Authorization and Restriction of Chemicals (REACH),Waste Electrical and Electronic Equipment Directive (WEEE) |
| Country of Origin | China |
| Warranty | |
| Limited Warranty | Lifetime |
User Manual
FAQ
What devices can I connect with this null modem cable?
This cable is designed to connect two data terminal equipment (DTE) devices with DB-9 and DB-25 serial ports. Common applications include linking PCs to serial modems or printers, connecting industrial control systems, or establishing direct communication between computers for file transfer or debugging. It supports standard RS-232 serial communication protocols.
How does the null modem configuration work?
A null modem cable crosses the transmit and receive lines between the two connectors, allowing two DTE devices to communicate directly without a modem. In this cable, the DB-9 female and DB-25 male connectors are wired so that signals are properly routed for direct serial communication, eliminating the need for additional hardware.
What is the purpose of the EMI shielding?
The cable features full shielding to protect against electromagnetic interference (EMI), which can disrupt serial data transmission. This ensures reliable communication in environments with electrical noise, such as near machinery, power supplies, or other cables, maintaining data integrity for critical connections.
Are the connectors durable for frequent use?
Yes, the molded connectors include strain relief that prevents damage from bending or pulling at the connection points. This design extends the cable's lifespan in scenarios where it may be plugged and unplugged regularly, such as in testing environments or mobile equipment setups.
What environmental standards does this cable meet?
The cable is EU RoHS compliant, meaning it restricts hazardous substances like lead and mercury. It also adheres to REACH and WEEE directives for chemical safety and electronic waste management. These certifications ensure it meets environmental regulations for use in various regions.
What warranty coverage is provided?
StarTech.com offers a lifetime limited warranty on this cable, covering defects in materials and workmanship for the product's lifespan. This warranty provides long-term assurance of quality and reliability, making it a dependable choice for professional installations where downtime must be minimized.
| Qty | Price | Available |
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