---
product_id: 4266922
title: "Bargain Cable DB9 Female / DB9 Female Null Modem Mini Adapter"
brand: "stsi"
price: "83.65 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Stsi"
url: https://www.desertcart.tn/products/4266922-bargain-cable-db9-female-db9-female-null-modem-mini-adapter
store_origin: TN
region: Tunisia
---

# Reliable crossover connection DB9 Female to Female Null Modem Adapter Secure screw-lock design Bargain Cable DB9 Female / DB9 Female Null Modem Mini Adapter

**Brand:** stsi
**Price:** 83.65 DT
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect the past with the future—never miss a byte!

## Quick Answers

- **What is this?** Bargain Cable DB9 Female / DB9 Female Null Modem Mini Adapter by stsi
- **How much does it cost?** 83.65 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/4266922-bargain-cable-db9-female-db9-female-null-modem-mini-adapter)

## Best For

- stsi enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Portable:** Mini adapter design fits easily into any tech toolkit or workspace.
- • **Trusted Performance:** Highly rated with 4.5 stars from 81 users who rely on it daily.
- • **Robust Screw-Lock Fit:** Ensures a secure, no-slip connection for uninterrupted data flow.
- • **Value-Packed Reliability:** Affordable yet dependable—perfect for professionals managing legacy systems.
- • **Seamless Legacy Connectivity:** Effortlessly bridge modern USB-to-serial cables with vintage switches and devices.

## Overview

The STSI NULL-A-9FF is a compact DB9 female-to-female null modem adapter designed for crossover serial connections. It features a secure screw-lock mechanism for stable connections and is highly rated for reliable performance in connecting USB-to-serial cables to legacy equipment. Ideal for professionals needing dependable, budget-friendly serial communication solutions.

## Description

Brand: STSI Model: NULL-A-9FF

Review: Great, inexpensive - Great, inexpensive, crossover adapter. Been using it constantly to connect a USB-to-serial console cable to old switches and it hasn't failed me one bit. Screws line up nicely on both sides for a secure fit when needed.
Review: They get the job done... - I bought 4 of these for my test equipment - they got the job done. Though the screw on one of these did snap under medium torque... the other 3 adaptors were fine under the same torque. However, on a different one of these adaptors, I had to “open up” one of the pin holes slightly before it would accept my male cable. I would probably buy again.

## Features

- Brand: STSI
- Model: NULL-A-9FF

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #143 in Modem Cables |
| Customer Reviews | 4.5 out of 5 stars 81 Reviews |

## Images

![Bargain Cable DB9 Female / DB9 Female Null Modem Mini Adapter - Image 1](https://m.media-amazon.com/images/I/71bXJ3iqIkL.jpg)
![Bargain Cable DB9 Female / DB9 Female Null Modem Mini Adapter - Image 2](https://m.media-amazon.com/images/I/71kcNDbCilL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great, inexpensive
*by O***Z on July 29, 2017*

Great, inexpensive, crossover adapter. Been using it constantly to connect a USB-to-serial console cable to old switches and it hasn't failed me one bit. Screws line up nicely on both sides for a secure fit when needed.

### ⭐⭐⭐⭐ They get the job done...
*by D***N on November 23, 2013*

I bought 4 of these for my test equipment - they got the job done. Though the screw on one of these did snap under medium torque... the other 3 adaptors were fine under the same torque. However, on a different one of these adaptors, I had to “open up” one of the pin holes slightly before it would accept my male cable. I would probably buy again.

### ⭐⭐⭐⭐⭐ Cheap, shipped fast, and it works
*by W***T on April 25, 2012*

It is not very often that I can get something cheap, fast, and that performs as it should. This is one such item. The hardware seems to be durable, it is very compact, and it performs the simple null modem task.

## Frequently Bought Together

- Bargain Cable DB9 Female / DB9 Female Null Modem Mini Adapter
- Gearmo USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7/, Mac OS X 10.6 and Above

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tn/products/4266922-bargain-cable-db9-female-db9-female-null-modem-mini-adapter](https://www.desertcart.tn/products/4266922-bargain-cable-db9-female-db9-female-null-modem-mini-adapter)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-04*