StarTech.com NM9MF DB9 RS232 Serial Null Modem Adapter

Struggling with mismatched serial connections can halt a project in minutes. The null modem adapter solves this by turning a straight-through DB9 cable into a cross-linked link, letting two devices talk directly without extra wiring. It’s a simple, cost-effective fix that keeps your workflow moving and eliminates the need for specialised cables.

Usages of a DB9 null modem

Ideal for connecting legacy printers, industrial equipment, or networking gear that requires a reversed serial link, this adapter fits seamlessly into daily maintenance routines. Just plug the male DB9 into one device and the female into the other, and you have instant two-way communication.

Benefits of StarTech.com null modem

• Lifetime warranty: Peace of mind with a guarantee that lasts as long as you own it.
• Free technical support: Expert help is available whenever you need it, at no extra cost.
• Cost saving: Converts an existing straight-through cable, avoiding the purchase of a new null-modem cable.
• Easy installation: No tools required, just plug and play.
• Reliable connection: Solid 9-pin D-Sub contacts ensure stable data transfer.

StarTech.com Null Modem Advantage

Choosing this adapter means you get a purpose-built solution that removes the guesswork from serial networking. The DB9 male-to-female configuration matches common equipment, so you won’t waste time hunting for the right connector. Its robust construction and lifetime support make it a dependable part of any technician’s toolkit, offering more value than a generic cable hack.

Key Features of a DB9 null modem

• Right connector gender: Female. Provides the correct end for connecting to a device that expects a female port.
• Left connector gender: Male. Fits the opposite end of a standard straight-through cable.
• Right connector type: 9 pin D-Sub (DB-9). Ensures compatibility with most RS232 hardware.
• Left connector type: 9 pin D-Sub (DB-9). Matches the common male end of serial cables.
• Cable subcategory: Serial. Designed specifically for serial data transmission.
• I/O cable type: Null modem adapter. Reverses transmit and receive lines for direct device communication.
• Product line: StarTech. Backed by the reputation of a recognised networking brand.
• Packaged quantity: 1. One adapter per package, ready for immediate use.
• Product colour: Grey. Neutral colour that blends with typical equipment racks.
• Service & Support type: Limited lifetime warranty. Guarantees long-term reliability and assistance.

Specifications