Db9 Female to Female
FailThe top 5 brands take 94% of clicks, so Db9 Female to Female is a Fail.
- Flapen Score
- 45 / 100Top 41% of 8,347 Electronics niches · +2 vs the category median of 4345
- Market size
- $74K/yr153K searches / yr
- 90-day growth
- +40.7%search demand this quarter
- Competition
- 68%top-5 click share · 8 brands · 59 sellers
Flapen Score
Db9 Female to Female against its category
The dotted line is the Electronics average. Past it, Db9 Female to Female is stronger. Inside it, weaker.
Market
The Db9 Female to Female market on Amazon at a glance
Shoppers on Amazon United States searched for Db9 Female to Female 153K times last year and spent an estimated $74K. The top 5 brands take 94% of clicks. Flapen scores it 45 out of 100, a Fail.
01 · Demand
An estimated 4.5% of those searches ended in a purchase.
Shoppers searched for this 153K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 4.5% of those searches ended in a purchase. Searches in the last 90 days moved +40.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $74K a year.
- Searches, last 12 months
- 153K
- Growth, 90 days vs prior 90
- +40.7%
- Conversion, latest week
- 4.5%
- Market size, estimated
- $74Ka year
- Top search term
- null modem adapter40K searches a year
02 · Price
A sale here is worth $10.67.
Listings sell for $10.67 on average, from $5.33 to $31.82. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 250 to 500 of them. At $10.67 that is $3K to $5K a year per listing.
- Average price
- $10.67under the $15 to $100 sweet spot
- Price range
- $5.33–$31.82
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 5K–6K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $3K–$5K
- Returns
- 1.4%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
89% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #569 within Computer Cable Adapters. It carries 370 reviews at 4.54 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 89%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #569in Computer Cable Adapters
- Average rating
- 4.54 starsAmazon United States average 4.42 stars
- Average reviews
- 370per listing
- Listings tracked
- 18
04 · Newcomers
1 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 93 months on average, so the names here are established.
- Launched, last 12 months
- 1
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 93 months
Products
Top Db9 Female to Female products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 21, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
DB9 null modem male to female slimline data transfer serial port adapter 2 Pack
- Price
- $7.75
- Rating
- 4.7/5
- Reviews
- 1,019
- Age
- 8y ago

Arnorin DB9 Null Modem Female to Female Slimline Data Transfer Serial Port Adapter 2 Pack
- Price
- $7.78
- Rating
- 4.7/5
- Reviews
- 800
- Age
- 8y ago

Arnorin DB9 Null Modem Adapter Male to Male Slimline Data Transfer Serial Port Adapter 2 Pack
- Price
- $7.95
- Rating
- 4.7/5
- Reviews
- 299
- Age
- 7y ago

Arnorin DB9 Null Modem Adapter Male to Female Slimline Data Transfer Serial Port Adapter 10 Pack
- Price
- $27.53
- Rating
- 4.8/5
- Reviews
- 62
- Age
- 8y ago

StarTech DB9 RS232 Serial Null Modem Adapter Female to Female (NM9FF)
- Price
- $5.57
- Rating
- 4.5/5
- Reviews
- 328
- Age
- 22y ago
Trending
estimated 90-day click momentum
Cyberguys! DB9 Adapter 3-Pack RS232 Serial Gender Changer Set Female to Female Male to Male Male to Female DB9 Serial Port Connector Adapters for PC Modem POS Router Printer Switch
- Price
- $11.06
- Rating
- 4.2/5
- Reviews
- 24
- Age
- 10mo ago

Lamroyce 9-Pin DB9 Coupler 2 Pack 9-Pin DB9 Female to Female Adapter Connector Mini Gender Changer Extender Support 1080P Full HD-RS232 Serial Cable Coupler for Data Transfer
- Price
- $6.10
- Rating
- 4.0/5
- Reviews
- 6
- Age
- 1y ago

DTECH 1.5 ft Straight Through Serial DB9 Cable Female to Female 9 Pin COM Port Cord for Data Communication (0.5 Meter Black)
- Price
- $7.90
- Rating
- 4.6/5
- Reviews
- 378
- Age
- 5y ago

StarTech 6ft USB to Serial RS232 Adapter Null Modem TAA (ICUSB232FTN)
- Price
- $31.82
- Rating
- 4.6/5
- Reviews
- 945
- Age
- 14y ago

Arnorin DB9 Null Modem Adapter Male to Female Slimline Data Transfer Serial Port Adapter 5 Pack
- Price
- $17.88
- Rating
- 4.6/5
- Reviews
- 169
- Age
- 8y ago
Newest
by launch date
Cyberguys! DB9 Adapter 3-Pack RS232 Serial Gender Changer Set Female to Female Male to Male Male to Female DB9 Serial Port Connector Adapters for PC Modem POS Router Printer Switch
- Price
- $11.06
- Rating
- 4.2/5
- Reviews
- 24
- Age
- 10mo ago

Lamroyce 9-Pin DB9 Coupler 2 Pack 9-Pin DB9 Female to Female Adapter Connector Mini Gender Changer Extender Support 1080P Full HD-RS232 Serial Cable Coupler for Data Transfer
- Price
- $6.10
- Rating
- 4.0/5
- Reviews
- 6
- Age
- 1y ago

LuoQiuFa 2 Pack Rs232 Serial Cable 9 Pin DB9 Female to FemaleGender Changer Coupler Adapter Connector
- Price
- $7.12
- Rating
- 4.3/5
- Reviews
- 44
- Age
- 5y ago

DTECH 1.5 ft Straight Through Serial DB9 Cable Female to Female 9 Pin COM Port Cord for Data Communication (0.5 Meter Black)
- Price
- $7.90
- Rating
- 4.6/5
- Reviews
- 378
- Age
- 5y ago

DTECH DB9 RS232 Serial Cable Female to Female Null Modem Cord Full Handshaking 7 Wire Crossover for Data Communication (1.5 Feet Black)
- Price
- $7.99
- Rating
- 4.6/5
- Reviews
- 112
- Age
- 5y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 68% of clicks. Leaders hold, but buyers still shop past them.
Brands
8 rising
Sellers
59
Est. top-5 brand share
94%
Top 20: 100%
Est. top-5 click share
68%
Top 20: 100%
Open market
4%
- Arnorin66%
- StarTech.com12%
- DTECH9%
- C2G4%
- Lamroyce3%
- Cyberguys!3%
- Open — no brand owns it (2 brands, 4%)
Search terms
Top Db9 Female to Female search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- null modem adapter40K/yr
- null modem34K/yr
- db9 null modem adapter32K/yr
- db9 null modem31K/yr
- rs232 null modem adapter8K/yr
- db9 female to female6K/yr
- rs232 female to female2K/yr
Reviews and returns
What reviews say buyers love and hate about Db9 Female to Female
We read the reviews and the return reasons for every product selling here.
“did not work”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
16 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Db9 Female to Female questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









