84.07 USD
StarTech.com DB9 RS232 Serial Null Modem Adapter MF
StarTech.com DB9 RS232 Serial Null Modem Adapter M/F is a device that connects two DB9-equipped devices, enabling data transfer between them through serial communication
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Product Overview
The StarTech.com DB9 RS232 Serial Null Modem Adapter MF is a compact, high‑performance interface that enables direct serial communication between two devices using the standard DB9 connector format. Designed for both industrial and office environments, this adapter provides a reliable solution for connecting legacy equipment, embedded systems, or any hardware that requires a straight RS232 link.
Key Technical Specifications
- Connector Types: DB9 Male (straight) on one end and DB9 Female (straight) on the other.
- Gender Configuration: Male/Female, allowing seamless connection between two male or two female RS232 ports.
- Physical Dimensions: Height: 15 mm; Width: 33.6 mm; Depth: 50.5 mm.
- Weight: 33 g, making it lightweight and portable for field use.
- Certifications: CE, RoHS, REACH – ensuring compliance with European safety, health, and environmental standards.
- Packaging: Each unit is individually packaged; a master outer case contains 500 units, facilitating bulk distribution for large projects.
Design Features
The adapter’s straight form factor on both connectors ensures that it can be inserted into standard DB9 sockets without the need for additional adapters or cable extensions. The grey housing provides a neutral aesthetic that blends seamlessly with most hardware setups, while the robust construction guarantees durability under continuous use.
Connector Integrity and Signal Quality
Each pin on the DB9 connectors is precisely aligned to maintain signal integrity across the serial link. The adapter’s internal wiring follows strict impedance matching guidelines for RS232 communication, reducing noise and preventing data corruption during high‑speed transmissions.
Application Scenarios
- Industrial Automation: Connect PLCs, SCADA systems, or motor controllers that use RS232 interfaces.
- Embedded Systems Development: Link microcontrollers or single‑board computers to serial consoles for debugging and firmware updates.
- Legacy Equipment Integration: Bridge older serial devices such as barcode scanners, printers, or measurement instruments with modern PCs.
- Network Infrastructure: Provide a null modem connection between two routers or switches that support RS232 console ports for configuration and troubleshooting.
Installation and Compatibility
Installing the adapter is straightforward: plug the male end into one device’s DB9 port, then connect the female end to the second device’s port. No additional drivers or software are required because RS232 is a native serial communication standard supported by virtually all operating systems.
Supported Operating Systems
The adapter works seamlessly with Windows, macOS, Linux, and embedded RTOS platforms that provide UART/RS232 support. Its plug‑and‑play nature eliminates the need for configuration changes or registry edits.
Reliability and Longevity
Built to meet CE, RoHS, and REACH standards, the adapter uses high‑quality materials that resist corrosion and electrical degradation. The lightweight design (33 g) also reduces mechanical stress on the connectors during repeated insertions.
Environmental Considerations
The product’s compliance with RoHS ensures that it contains no hazardous substances such as lead, mercury, or cadmium. This makes it suitable for use in environmentally sensitive applications and simplifies disposal or recycling processes at the end of its lifecycle.
Packaging Details
Each adapter is individually packaged to protect against static discharge and physical damage during transit. The master outer case dimensions (44 cm height, 43 cm length, 30 cm width) allow efficient storage and shipping for large-scale deployments.
Conclusion
The StarTech.com DB9 RS232 Serial Null Modem Adapter MF delivers a reliable, standards‑compliant solution for connecting serial devices across a wide range of industries. Its compact size, lightweight construction, and rigorous certification make it an ideal choice for engineers, technicians, and system integrators who require dependable serial communication without the complexity of additional adapters or software.
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 10.90 EUR  9.40 EUR  8.00 EUR  13.26 EUR  6.17 EUR |
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Predominant colors of the product |
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| Tags | Null Modem Adapter StarTech DB9 Serial Null Modem RS232 Serial Null |
| Identifiers | |
| Brand | STARTECH.COM Startech.com is a brand that specializes in computer and electronic accessories. They offer a wide range of products, including adapters, cables, storage solutions, and more. |
| Model | STARTECH.COM NM9MF |
| MPN | STARTECH.COM NM9MF |
| ID | 10422753 |
| Dimensions / Weight | |
| Key Features | |
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Certification A list of official certifications or compliance marks that the product has received from regulatory bodies, safety organizations, or industry standards groups. Each entry represents a distinct certification such as CE, FCC, RoHS, UL, or WEEE, and may include additional details like version numbers or specific test reports.
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CE, REACH |
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Colour The colour or combination of colours that a product is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the item for consumers.
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Grey |
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Connector 1 The physical interface or port located at the first end of a cable or device, such as USB‑A, HDMI, RJ‑45, DisplayPort, Lightning, or other standard connectors. It identifies the shape, pin count and electrical characteristics that determine compatibility with cables, adapters or other components.
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DB9 Male |
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Connector 1 form factor The physical shape or configuration of the first connector on a device, indicating whether it is straight, angled, right‑handed, left‑handed, rotating, foldable, or another form. This attribute helps users identify how the connector aligns with cables and ports.
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Straight |
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Connector 1 gender Indicates the gender or sex classification of a connector, such as Male, Female, or Unspecified. This attribute helps users identify whether a cable or port is designed for insertion (Male) or reception (Female).
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Male |
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Connector 2 gender Indicates whether the second end of a cable or connector is male, female, or another gender type. This value helps users determine compatibility with other components and ensures proper mating of connectors.
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Female |
| Connector gender | Male/Female |
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Depth The linear measurement of an object from front to back or top to bottom, expressed in a physical unit such as millimeters, centimeters, inches, etc. It indicates how deep the item is and can be used for fitting, compatibility, or spatial planning.
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50.5 mm |
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Height The vertical dimension of a product measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and applies to any item where height is relevant, including books, electronics, furniture and other objects.
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15 mm |
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Master outer case height The vertical dimension of a product’s outer enclosure measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and applies to any item where the overall height of the external case is relevant, including electronics, appliances, furniture and packaged goods.
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44 cm |
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Master outer case length The linear dimension of a product’s outer case measured in a standard unit such as meters, centimeters or inches. It represents the overall length from one end to the other and is used to compare the size of similar items across categories.
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43 cm |
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Master outer case width The horizontal dimension of a product’s outer enclosure measured in a linear unit such as millimetres or inches. It indicates how wide the item is from one side to the other and is used for sizing, fitting, and compatibility purposes.
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30 cm |
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Package Height The vertical dimension of a product’s packaging measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and helps customers assess how tall the package will be when stored or shipped.
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125 mm |
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Package width The horizontal measurement of a product’s packaging, expressed in a linear unit such as millimetres or inches. It indicates how wide the package is from one side to the other and helps customers assess fit for storage, shipping, or display.
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90 mm |
| Products per master (outer) case | 500 pc(s) |
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RoHS compliance Indicates whether the product is manufactured in accordance with the RoHS (Restriction of Hazardous Substances) directive, which limits the use of certain hazardous materials in electrical and electronic equipment.
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Yes |
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Sustainability certificates A list of environmental, safety or quality certifications that a product has obtained from recognized authorities. Typical entries include RoHS, ENERGY STAR, CE, WEEE, TCO Certified, FCC, and other industry‑specific standards.
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CE, RoHS |
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Weight The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.
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33 g |
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Width The horizontal measurement of a product, expressed in a linear unit such as millimetres or inches. It indicates how wide the item is from one side to the other and is used for sizing, fitting, and compatibility purposes.
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33.6 mm |
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