---
product_id: 3958226
title: "StarTech.com DB9 RS232 Serial Null Modem Adapter - F/F - Null modem adapter - DB-9 (F) to DB-9 (F) - NM9FF"
brand: "startech.com"
price: "$321"
currency: MXN
in_stock: true
reviews_count: 13
category: "Star Tech.Com"
url: https://www.desertcart.mx/products/3958226-startech-com-db9-rs232-serial-null-modem-adapter-f-f
store_origin: MX
region: Mexico
---

# Instant null modem conversion Compact 1.09 oz for on-the-go pros DB9 Female to Female connection StarTech.com DB9 RS232 Serial Null Modem Adapter - F/F - Null modem adapter - DB-9 (F) to DB-9 (F) - NM9FF

**Brand:** startech.com
**Price:** $321
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect like a pro—never miss a serial beat!

## Quick Answers

- **What is this?** StarTech.com DB9 RS232 Serial Null Modem Adapter - F/F - Null modem adapter - DB-9 (F) to DB-9 (F) - NM9FF by startech.com
- **How much does it cost?** $321 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/3958226-startech-com-db9-rs232-serial-null-modem-adapter-f-f)

## Best For

- startech.com enthusiasts

## Why This Product

- Trusted startech.com brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Broad Compatibility:** Works flawlessly with PCI2S232485IPCI8S950LP and other DB9 serial devices for versatile connectivity.
- • **Plug-and-Play Simplicity:** No drivers or software needed—just connect and get your serial communication up and running instantly.
- • **Trusted Industry Standard:** A top-ranked serial adapter with 4.5-star reviews, ensuring reliability when it matters most.
- • **Ultra-Lightweight & Portable:** At just over an ounce, it’s the perfect tech insurance for every network pro’s toolkit.
- • **Seamless DB9 Female-to-Female Interface:** Effortlessly convert straight-through cables into null modem cables without extra gear.

## Overview

The StarTech.com NM9FF Null Modem Adapter is a compact, lightweight DB9 female-to-female connector that converts straight-through serial cables into null modem cables. Designed for seamless plug-and-play use, it supports a wide range of serial devices and is a must-have for IT professionals needing reliable RS232 communication on the go.

## Description

The NM9FF Null Modem Adapter features two DB9 female connectors - a cost-saving way to convert a straight through cable into a null modem cable..

Review: A must have for every network tech bag - I keep one of these with me in a bag you never know when you might run into a router or switch with a DB9 console port. It works and it's a good insurance policy. (This assumes you also have a DB9 to USB adapter with you as well) What I keep with me (1) StarTech DB9 RS232 Serial Null Modem Adapter - F/F (2) StarTech.com 10-Feet DB9 RS232 Serial Null Modem Cable (3) Plugable USB to RS-232 DB9 Serial Adapter
Review: Easy to use - Quick and easy to use null modem conversion

## Features

- F/F
- Null modem adapter
- DB-9 (F) to DB-9 (F)
- for P/N: PCI2S232485I
- PCI8S950LP

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000DZH4V0 |
| Best Sellers Rank | #134 in Serial Adapters |
| Customer Reviews | 4.5 4.5 out of 5 stars (317) |
| Date First Available | July 7, 2004 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.09 ounces |
| Item model number | NM9FF |
| Language | English |
| Manufacturer | StarTech.com |
| Product Dimensions | 3.23 x 0.83 x 5.91 inches |

## Product Details

- **Color:** white
- **Compatible Devices:** Modems, routers, servers with DB9 serial port
- **Connector Type:** RS232
- **Item dimensions L x W x H:** 3.23 x 0.83 x 5.91 inches
- **Specific Uses For Product:** personal

## Images

![StarTech.com DB9 RS232 Serial Null Modem Adapter - F/F - Null modem adapter - DB-9 (F) to DB-9 (F) - NM9FF - Image 1](https://m.media-amazon.com/images/I/41Go3kEGFnL.jpg)
![StarTech.com DB9 RS232 Serial Null Modem Adapter - F/F - Null modem adapter - DB-9 (F) to DB-9 (F) - NM9FF - Image 2](https://m.media-amazon.com/images/I/71754cM4CvL.jpg)
![StarTech.com DB9 RS232 Serial Null Modem Adapter - F/F - Null modem adapter - DB-9 (F) to DB-9 (F) - NM9FF - Image 3](https://m.media-amazon.com/images/I/81sXE0L9D2L.jpg)
![StarTech.com DB9 RS232 Serial Null Modem Adapter - F/F - Null modem adapter - DB-9 (F) to DB-9 (F) - NM9FF - Image 4](https://m.media-amazon.com/images/I/81vW8R9i+OL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ A must have for every network tech bag
*by D***T on May 16, 2014*

I keep one of these with me in a bag you never know when you might run into a router or switch with a DB9 console port. It works and it's a good insurance policy. (This assumes you also have a DB9 to USB adapter with you as well) What I keep with me (1) StarTech DB9 RS232 Serial Null Modem Adapter - F/F (2) StarTech.com 10-Feet DB9 RS232 Serial Null Modem Cable (3) Plugable USB to RS-232 DB9 Serial Adapter

### ⭐⭐⭐⭐⭐ Easy to use
*by J***3 on October 27, 2025*

Quick and easy to use null modem conversion

### ⭐⭐⭐⭐ Null Modem
*by A***I on June 9, 2013*

Excellent sale, good communication, fast shipping, product works, and overall worth the price. A+++, interfaced well with USB/RS232 serial cable and Cisco Managed router cable.

## Frequently Bought Together

- StarTech.com DB9 RS232 Serial Null Modem Adapter - F/F - Null modem adapter - DB-9 (F) to DB-9 (F) - NM9FF
- StarTech.com 10' RS232 Serial Null Modem Cable - Null modem cable - DB-9 (F) to DB-9 (F) - 10 ft (SCNM9FF)
- StarTech.com DB-9 (M) to DB-9 (F) Serial Adapter

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**Shop now:** [https://www.desertcart.mx/products/3958226-startech-com-db9-rs232-serial-null-modem-adapter-f-f](https://www.desertcart.mx/products/3958226-startech-com-db9-rs232-serial-null-modem-adapter-f-f)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-03-23*