---
title: "Rs232 Cable — $65K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/electronics/rs232-cable"
last_updated: "2026-08-10T07:49:59.695Z"
locale: en
meta:
description: "Niche score 45/100 · $65K/yr market · 80K searches/yr · $12.74 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $65K/yr market · 80K searches/yr · $12.74 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Rs232 Cable — $65K/yr Amazon US Niche (2026) - Flapen"
---
# **rs232 cable**
**Skip it**
A small market ($65K/yr) — this niche doesn't clear our bar today.
Market size 16Growth 22Conversion 69Competition 57Returns 76Price range 69Avg price 56Brand share 37Review moat 66Quality gap 35
**Returns**
**Great****2.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Good****6.3%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$5.32–$36.57**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****843.09**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Good****51%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Good****$12.74**
avg listing price — sweet spot $15–$100
**Brand share**
**Okay****83%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-5.2%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$65K**
$65K/yr · 80K searches
According to Flapen's Amazon United States niche tracking, rs232 cable is a $65K/yr Amazon United States market (80K searches/yr). The top 5 brands hold 83% of demand. Verdict: Skip it — 45/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **rs232 cable market data**
- **Units sold / yr**
- **6K–8K**
- avg 100–250/product
- **Revenue / yr**
- **$76K–$102K**
- units × avg price
- **Conversion rate**
- **6.3%**
- **Avg BSR**
- **#507**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **91%**
- **Out of stock**
- **0.2%**
- **Avg brand age**
- **74 months**
- **Avg seller age**
- **205 days**
## **Competition & brand share**
The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**14 **▼falling
**Sellers**
**68**
**Top-5 brand share**
**83%**
Top 20: 100%
**Top-5 click share**
**51%**
Top 20: 88%
**Open market**
**14%**
- StarTech.com39% - DTECH20% - OIKWAN11% - XANHAM8% - SABRENT6% - XMSJSIY3% - Open — no brand owns it (8 brands, 14%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -5.2% search growth over the last 90 days.
2K2KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/us/electronics/rs232-cable/trend)
## **Top rs232 cable search terms**
- **rs232 cable**18K/yr+2.6%4.7% conv. - **db9 cable**15K/yr+3.9%5.7% conv. - **serial cable**16K/yr-6.7%8.2% conv. - **rs232**12K/yr+2.7%3.0% conv. - **serial cables**6K/yr-46.0%2.1% conv. - **rs-232 cable**3K/yr+4.7%5.3% conv. - **9 pin serial cable**4K/yr-30.9%9.9% conv. - **rs-232c cable**2K/yr+7.3%1.9% conv. - **rs 232 cable**2K/yr-13.0%5.9% conv. - **db9 serial cable**2K/yr-16.7%10.0% conv. [**All search terms **](https://flapen.com/research/us/electronics/rs232-cable/search-terms)
## **Top rs232 cable products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%4%$3K8%$5K12%$8K16%$10K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1003MBK) 10 ft / 3m**StarTech.com**$9.90**4.6★1,734 rev](https://www.amazon.com/dp/B00A6GIV9K) [2**StarTech 1m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1001MBK)**StarTech.com**$6.27**4.5★802 rev](https://www.amazon.com/dp/B00A6GIUNC) [3**StarTech.com 10 RS232 Serial Null Modem Cable - Null modem cable - DB-9 (F) to DB-9 (F) - 10 ft (SCNM9FF)**StarTech.com**$5.32**4.7★1,148 rev](https://www.amazon.com/dp/B00006B8BJ) [4**OIKWAN USB to RS232 USB Serial Adapter with FTDI Chipset USB 2.0 to Male DB9 Serial Cable for Windows 11 10 8 7 Vista XP 2000 Linux and Mac OS(6ft)**OIKWAN**$12.97**4.6★1,986 rev](https://www.amazon.com/dp/B0759HSLP1) [5**DTECH 2m DB9 RS232 Serial Cable Male to Female Computer Monitor Cable 9 Pin Null Modem Extension Cord for PC Data Communication6feet Black**DTECH**$9.44**4.5★283 rev](https://www.amazon.com/dp/B07B4T699J)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Cable Matters RS232 Cable Serial Cable - 10ft Male to Female 9 Pin DB9 Cord**Cable Matters**$7.95**24 rev1y ago](https://www.amazon.com/dp/B0DGFQGFTG) [**XANHAM 6.6 Feet(2 Meter) DB9 Straight Through 9 Pin RS232 Serial Extension Cable Double Shielded Metal Braided&AL-foil Female to Male Black SC902S08FM**XANHAM**$8.86**47 rev2y ago](https://www.amazon.com/dp/B0CTKLYMNH) [**XANHAM 3.3 Feet(1 Meter) DB9 Straight Through 9 Pin RS232 Serial Extension Cable Double Shielded Metal Braided&AL-foil Female to Male Black SC902S07FM**XANHAM**$8.00**47 rev2y ago](https://www.amazon.com/dp/B0CTKMMSK3) [**Willwewon 10Ft 3m 26AWG DB9 Female RS232 9 Pin Serial Extension Cable RS232 D-SUB DB9 Serial to 9 Bare Wire Breakout Board Connector**Generic**$15.47**24 rev2y ago](https://www.amazon.com/dp/B0CHMH6DVS) [**OIKWAN USB to RS232 Serial Adapter with FTDI Chipset - USB 2.0 to Female DB9 Serial Cable for Windows and Mac (6ft)**OIKWAN**$12.70**173 rev3y ago](https://www.amazon.com/dp/B0BKJKYCJK)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[![SABRENT USB 2.0 to Serial (9-Pin) DB-9 RS-232 Adapter Cable 6ft Cable [FTDI Chipset] (CB-FTDI)](https://m.media-amazon.com/images/I/41e7GAKHH-L.jpg)**SABRENT USB 2.0 to Serial (9-Pin) DB-9 RS-232 Adapter Cable 6ft Cable \[FTDI Chipset\] (CB-FTDI)**SABRENT**$13.34**4.6★**▲ 96%**](https://www.amazon.com/dp/B006AA04K0) [**StarTech 1m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1001MBK)**StarTech.com**$6.27**4.5★**▲ 46%**](https://www.amazon.com/dp/B00A6GIUNC) [**OIKWAN USB Console Cable USB to RJ45 Console Cable for Cisco Routers/AP Router/Switch Windows Mac Linux(1.8m Blue)**OIKWAN**$9.69**4.7★**▲ 37%**](https://www.amazon.com/dp/B075V1RGQK) [**DTECH RS-232 Cable 10ft RS232 Serial Cable Male to Male 9 Pin DB9 Cord Straight Through**DTECH**$11.83**4.2★**▲ 33%**](https://www.amazon.com/dp/B07B2CBWVQ) [**ANMBEST 10PCS DB9 Female Breakout Connector DB9 Solderless RS232 D-SUB Serial to 9-pin Port Terminal Adapter Connector Breakout Board with Case Long Bolts Tail Pipe**ANMBEST**$35.56**4.8★**▲ 19%**](https://www.amazon.com/dp/B09WCRYTP2)
**~~View all trending →~~**
## **What buyers say about rs232 cable**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**22%
*“Excellent quality”*
**Advertised Vs Actual Product**20%
*“Serves it's purpose”*
**Connectivity-Overall**11%
*“the connection is secure with no wiggle or loose contacts”*
**Compatibility-Overall**11%
*“Worked perfect with my Windows 11 laptop”*
**Value For Money**6%
*“Great price for this extension”*
**Size-Overall**6%
*“Completes the fit out”*
**Ease Of Use**5%
*“Easy to use”*
**Socket/Port/Plug**4%
*“Serial to USB and back”*
**Data Transfer Speed**2%
*“Good pinout for data transfers”*
**Software/Application**2%
*“This is critical in environments where software is controlled”*
### **What buyers complain about **
**Functionality-Overall**20%
*“Did not work”*
**Heating**17%
*“Could melt”*
**Durability**11%
*“Broke after a month”*
**Compatibility-Overall**9%
*“Couldnt get it to work on any of my computers”*
**Connectivity-Overall**9%
*“Cable does not work to communicate with my laser”*
**Socket/Port/Plug**5%
*“it will NOT communicate with the serial port”*
**Quality-Overall**4%
*“DON'T BUY, the chip inside is really poor quality”*
**Software/Application**4%
*“Prolific drivers from Sabrent site, app store, and Prolific site do not work”*
**Instructions/User Manual/Troubleshooting**4%
*“Does not come with any instructions”*
**Value For Money**3%
*“can't really afford these kinds of delays over a few bucks”*
### **Top return reasons **
**Compatibility-Overall**38%
**Connectivity-Overall**16%
**Functionality-Overall**14%
**Size-Overall**10%
**Socket/Port/Plug**4%
**Length**4%
**Defective Material/Parts**3%
**Advertised Vs Actual Product**3%
**Value For Money**2%
**Assembly/Installation**1%
## **Common questions**
- **Is rs232 cable profitable to sell on Amazon United States?**
- The niche generates $65K/yr across 33 tracked products. 90-day search growth is -5.2%. Flapen's verdict: Skip it (45/100).
- **How competitive is the rs232 cable niche?**
- 14 brands and 68 sellers compete. The top 5 products take 51% of clicks and top 5 brands hold 83% of demand.
- **What do buyers complain about in rs232 cable?**
- Top complaints mined from reviews: Functionality-Overall, Heating, Durability. The return rate is 2.0%.
- **When does demand for rs232 cable peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the rs232 cable niche?**
- Listings span $5.32–$36.57; the average listing price is $12.74 (sweet spot $15–$100). The average incumbent carries 843 reviews — the moat a new listing must climb.
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