---
product_id: 4267167
title: "9-Pin DB9 Male to Male Mini Null Modem Adapter NULL-A-9MM"
brand: "stsi"
price: "$29"
currency: MXN
in_stock: false
reviews_count: 8
url: https://www.desertcart.mx/products/4267167-9-pin-db9-male-to-male-mini-null-modem-adapter
store_origin: MX
region: Mexico
---

# 9-Pin DB9 Male to Male Mini Null Modem Adapter NULL-A-9MM

**Brand:** stsi
**Price:** $29
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** 9-Pin DB9 Male to Male Mini Null Modem Adapter NULL-A-9MM by stsi
- **How much does it cost?** $29 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/4267167-9-pin-db9-male-to-male-mini-null-modem-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

## Description

Although this is called a 9-pin null modem adapter because it fits into a 9-pin (DB9) socket, this adapter only has 8 pins. The 9th pin is not typically used in a null-modem adapter, so some manufacturers simply leave it out.

## Features

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

## Images

![9-Pin DB9 Male to Male Mini Null Modem Adapter NULL-A-9MM - Image 1](https://m.media-amazon.com/images/I/21kQCr19PqL.jpg)
![9-Pin DB9 Male to Male Mini Null Modem Adapter NULL-A-9MM - Image 2](https://m.media-amazon.com/images/I/21vq22p1L6L.jpg)
![9-Pin DB9 Male to Male Mini Null Modem Adapter NULL-A-9MM - Image 3](https://m.media-amazon.com/images/I/212s8JOuI-L.jpg)
![9-Pin DB9 Male to Male Mini Null Modem Adapter NULL-A-9MM - Image 4](https://m.media-amazon.com/images/I/31G0bYKR+UL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    I need them for troubleshooting at work. They are ...
  

*by J***C on Reviewed in the United States on September 7, 2015*

I need them for troubleshooting at work. They are compact and do what they're supposed to. I'll be buying more when I eventually  lose the ones I have.

### ⭐⭐⭐⭐⭐ 







  
  
    Great adapter.
  

*by D***S on Reviewed in the United States on August 21, 2014*

Can't get enough of these adapters.  I either keep loosing them, or people take them..

### ⭐⭐⭐⭐⭐ 







  
  
    Five Stars
  

*by D***E on Reviewed in the United States on April 4, 2016*

Excellent, extremely compact, and does the job!

---

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**Shop now:** [https://www.desertcart.mx/products/4267167-9-pin-db9-male-to-male-mini-null-modem-adapter](https://www.desertcart.mx/products/4267167-9-pin-db9-male-to-male-mini-null-modem-adapter)

---

*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-06*