rs232 cable
Skip itA small market ($65K/yr) — this niche doesn't clear our bar today.
Returns
Great2.0%return rate — above 5% kills the launch gate
Conversion
Good6.3%search→purchase rate — share of searches ending in a sale
Price range
Good$5.32–$36.57cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good843.09avg incumbent reviews — the moat a new listing must climb
Competition
Good51%top-5 click share — leaders hold, buyers still browse
Avg price
Good$12.74avg listing price — sweet spot $15–$100
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★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
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.No pronounced peak months · busiest ÷ quietest = 1.2×
Top rs232 cable search terms
- rs232 cable18K/yr
- db9 cable15K/yr
- serial cable16K/yr
- rs23212K/yr
- serial cables6K/yr
- rs-232 cable3K/yr
- 9 pin serial cable4K/yr
- rs-232c cable2K/yr
- rs 232 cable2K/yr
- db9 serial cable2K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$9.904.6★1,734 rev
StarTech 1m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1001MBK)
StarTech.com$6.274.5★802 rev
StarTech.com 10 RS232 Serial Null Modem Cable - Null modem cable - DB-9 (F) to DB-9 (F) - 10 ft (SCNM9FF)
StarTech.com$5.324.7★1,148 rev
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$12.974.6★1,986 rev
DTECH 2m DB9 RS232 Serial Cable Male to Female Computer Monitor Cable 9 Pin Null Modem Extension Cord for PC Data Communication6feet Black
DTECH$9.444.5★283 rev
Newest
by launch date
Cable Matters RS232 Cable Serial Cable - 10ft Male to Female 9 Pin DB9 Cord
Cable Matters$7.9524 rev
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$8.8647 rev
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$8.0047 rev
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$15.4724 rev
OIKWAN USB to RS232 Serial Adapter with FTDI Chipset - USB 2.0 to Female DB9 Serial Cable for Windows and Mac (6ft)
OIKWAN$12.70173 rev
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$13.344.6★
StarTech 1m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1001MBK)
StarTech.com$6.274.5★
OIKWAN USB Console Cable USB to RJ45 Console Cable for Cisco Routers/AP Router/Switch Windows Mac Linux(1.8m Blue)
OIKWAN$9.694.7★
DTECH RS-232 Cable 10ft RS232 Serial Cable Male to Male 9 Pin DB9 Cord Straight Through
DTECH$11.834.2★
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$35.564.8★
What buyers say about rs232 cable
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent quality”
“Serves it's purpose”
“the connection is secure with no wiggle or loose contacts”
“Worked perfect with my Windows 11 laptop”
“Great price for this extension”
“Completes the fit out”
“Easy to use”
“Serial to USB and back”
“Good pinout for data transfers”
“This is critical in environments where software is controlled”
What buyers complain about
“Did not work”
“Could melt”
“Broke after a month”
“Couldnt get it to work on any of my computers”
“Cable does not work to communicate with my laser”
“it will NOT communicate with the serial port”
“DON'T BUY, the chip inside is really poor quality”
“Prolific drivers from Sabrent site, app store, and Prolific site do not work”
“Does not come with any instructions”
“can't really afford these kinds of delays over a few bucks”
Top return reasons
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.