---
title: "Rs232 Usb Adapter — €52K/yr Amazon DE Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/de/computer-zubehoer/rs232-usb-adapter"
last_updated: "2026-08-09T23:45:27.373Z"
locale: en
meta:
description: "Niche score 42/100 · €52K/yr market · 42K searches/yr · €10.58 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · €52K/yr market · 42K searches/yr · €10.58 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Rs232 Usb Adapter — €52K/yr Amazon DE Niche (2026) - Flapen"
---
# **rs232 usb adapter**
**Skip it**
Soft demand (-25.5% this quarter) — this niche doesn't clear our bar today.
Market size 13Growth 12Conversion 94Competition 34Returns 76Price range 14Avg price 38Brand share 52Review moat 50Quality gap 55
**Conversion**
**Great****11.8%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****2.0%**
return rate — above 5% kills the launch gate
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****74%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****1,508**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Okay****€10.58**
avg listing price — sweet spot $15–$100
**Competition**
**Okay****64%**
top-5 click share — leaders hold, buyers still browse
**Price range**
**Bad****€4.83–€16.68**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Bad****€52K**
€52K/yr · 42K searches
**Growth**
**Bad****-25.5%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon Germany niche tracking, rs232 usb adapter is a €52K/yr Amazon Germany market (42K searches/yr). The top 5 brands hold 74% of demand. Verdict: Skip it — 42/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **rs232 usb adapter market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **€32K–€42K**
- units × avg price
- **Conversion rate**
- **11.8%**
- **Avg BSR**
- **#643**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **88%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **69 months**
- **Avg seller age**
- **204 days**
## **Competition & brand share**
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▼falling
**Sellers**
**64**
**Top-5 brand share**
**74%**
Top 20: 100%
**Top-5 click share**
**64%**
Top 20: 100%
**Open market**
**20%**
- UGREEN28% - OIKWAN20% - DTech11% - DIGITUS9% - Logilink7% - CableDeconn6%
## **Demand & seasonality**
Weekly Amazon search volume, last 66 weeks — -25.5% search growth over the last 90 days.
1K600Spike '25 seasonAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/de/computer-zubehoer/rs232-usb-adapter/trend)
## **Top rs232 usb adapter search terms**
- **rs232 usb adapter**14K/yr-20.8%8.5% conv. - **usb seriell adapter**9K/yr-36.1%7.6% conv. - **usb rs232 adapter**5K/yr-7.3%7.7% conv. - **rs232**6K/yr-28.4%1.1% conv. - **usb rs232**4K/yr-16.7%7.2% conv. - **rs232 usb**3K/yr-27.4%6.8% conv. - **seriell auf usb**2K/yr-59.7%14.4% conv. [**All search terms **](https://flapen.com/research/de/computer-zubehoer/rs232-usb-adapter/search-terms)
## **Top rs232 usb adapter 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%10%€5K20%€10K30%€16K40%€21K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**UGREEN USB auf RS232 Seriell Kabel USB Seriell DB9 mit PL2303 Chipsatz Kompatibel mit Router (1M)**UGREEN**€9.26**4.6★9,248 rev](https://www.amazon.de/dp/B00QUZY4UG) [2**OIKWAN USB auf RS232 serieller USB-Adapter mit FTDI-Chipsatz USB 2.0 auf DB9-Stecker serielles Kabel für Windows 11 10 8 7 Vista XP 2000 Linux und Mac OS (1 8 m)**OIKWAN**€10.90**4.6★1,904 rev](https://www.amazon.de/dp/B0759HSLP1) [3**DIGITUS USB auf Seriell Adapter - RS232 Konverter - USB 2.0 Typ-A zu DSUB 9M - FTDI FT232RL Chipsatz - Inkl. 80 cm Kabel**DIGITUS**€11.55**4.7★997 rev](https://www.amazon.de/dp/B0030IT780) [4**LogiLink USB 2.0 (Typ-A) auf Seriell (RS232-9pin) Adapter für Win 11**Logilink**€9.36**4.5★147 rev](https://www.amazon.de/dp/B0B59LYSGD) [5**CableDeconn USB to RS232 Adapter with Prolific PL2303 Chipset 6ft 2m USB 2.0 Male to RS 232 DB9 Serial Male with Connector Female Cable for Windows XP Windows Vista 7 8 10 Mac OS Linux**CableDeconn**€12.30**4.3★639 rev](https://www.amazon.de/dp/B00VBOCUIO)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**OIKWAN USB auf RS232 Adapter mit FTDI Chipsatz USB auf RS232 Stecker DB9 serieller Konverter für Kassenregister Modem Scanner Industriemaschinen CNC Schwarz**OIKWAN**€8.48**154 rev1y ago](https://www.amazon.de/dp/B0BL1MYZ2F) [**DTECH USB zu Seriell Adapter FTDI Chip DB9 9 polig RS232 zu USB Kabel FT231 Chipsatz unterstützt Windows 11 10 8 7 XP Mac OS Linux Datenlichterkennung (0.5M)**DTECH**€12.19**50 rev1y ago](https://www.amazon.de/dp/B0D9YFRVCD) [**Waveshare USB to RS232/485 Serial Converter Onboard Original FT232RNL Chip Features More Stable Transmission Suitable for Multiple Devices Compatible with Mac/Linux/Android/Win11/10/8.1/8/7 etc**Waveshare**€16.68**165 rev2y ago](https://www.amazon.de/dp/B0CTK7YZQK) [**DTech USB zu Seriell Adapter 3 m USB zu RS232 DB9 Buchsenkabel COM Port mit FTDI Chipsatz Unterstützt Windows 11 10 8 7 Mac Linux**DTech**€13.72**44 rev3y ago](https://www.amazon.de/dp/B0BMPFWPLH) [**LogiLink USB 2.0 (Typ-A) auf Seriell (RS232-9pin) Adapter für Win 11**Logilink**€9.36**147 rev4y ago](https://www.amazon.de/dp/B0B59LYSGD)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**OIKWAN USB auf RS232 serieller USB-Adapter mit FTDI-Chipsatz USB 2.0 auf DB9-Stecker serielles Kabel für Windows 11 10 8 7 Vista XP 2000 Linux und Mac OS (1 8 m)**OIKWAN**€10.90**4.6★**▲ 201%**](https://www.amazon.de/dp/B0759HSLP1) [**DTech FTDI USB zu Seriell Adapter kabel RS232 DB9 Stecker FT232RL Chipsatz unterstützt Windows 11 10 8 7 und Mac Linux (1 5 Fuß)**DTech**€13.33**4.5★**▲ 101%**](https://www.amazon.de/dp/B09LTTWMZR) [**DTech USB auf RS232 DB9 Seriell Port Adapter kabel mit FTDI Chipsatz Unterstützt Windows 11 10 8 7 und Mac Linux(1 2 m)**DTech**€13.92**4.5★**▲ 57%**](https://www.amazon.de/dp/B08L4ZR5ZX) [**DIGITUS USB auf Seriell Adapter - RS232 Konverter - USB 2.0 Typ-A zu DSUB 9M - PL2303GT Chipsatz - Inkl. 80 cm Kabel**DIGITUS**€7.71**4.3★**▲ 28%**](https://www.amazon.de/dp/B07VCG1GZJ) [**DTech USB zu Seriell Adapter 3 m USB zu RS232 DB9 Buchsenkabel COM Port mit FTDI Chipsatz Unterstützt Windows 11 10 8 7 Mac Linux**DTech**€13.72**4.2★**▲ 21%**](https://www.amazon.de/dp/B0BMPFWPLH)
**~~View all trending →~~**
## **What buyers say about rs232 usb adapter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**beworben Vs Tatsächliches Produkt**31%
*“Macht seinen Job”*
**Kompatibilität – insgesamt**15%
*“Funktioniert unter Windows 11. Funktioniert unter Windows 11. Kabel ist land.”*
**Qualität insgesamt**15%
*“Gutes Produkt”*
**Konnektivität – insgesamt**13%
*“Com Port”*
**Funktionalität insgesamt**7%
*“funktionsfähig”*
**Akkulaufzeit**4%
*“Gut für Pylontech Batterien”*
**Software/Anwendung**4%
*“Wirklich Super ohne Probleme bei Windows 11”*
**Montage/Installation**4%
*“Zunächst nur ein Feedback zur Installation, im Gegensatz zu einem anderen Produkt war die Installation in verschiedenen älteren Windows-Versionen (XP und Windows 7) aus Sicht des Betriebssystems immerhin möglich und erfolgreich.”*
**Preis-Leistungs-Verhältnis**2%
*“Preis Leistung stimmt”*
**Design insgesamt**1%
*“Die Verarbeitung wirkt solide”*
### **What buyers complain about **
**Konnektivität – insgesamt**43%
*“Keine Verbindung”*
**Kompatibilität – insgesamt**14%
*“Für Industrie nicht geeignet”*
**Funktionalität insgesamt**7%
*“ok. retour gesendet Treiber Fehler beim Gerät”*
**Stärke**7%
*“Abdeckung nicht besonders stabil”*
**Defekt Material/Teile**7%
*“Treiber Fehler beim Gerät”*
**Qualität insgesamt**7%
*“Billiger Chip”*
### **Top return reasons **
**Kompatibilität – insgesamt**33%
**Funktionalität insgesamt**24%
**Gesamtgröße**19%
**Konnektivität – insgesamt**15%
**Defekt Material/Teile**2%
**Buchse/Anschluss/Stecker**2%
**Software/Anwendung**1%
**Montage/Installation**1%
**Preis-Leistungs-Verhältnis**1%
**Qualität insgesamt**1%
## **Common questions**
- **Is rs232 usb adapter profitable to sell on Amazon Germany?**
- The niche generates €52K/yr across 17 tracked products. 90-day search growth is -25.5%. Flapen's verdict: Skip it (42/100).
- **How competitive is the rs232 usb adapter niche?**
- 11 brands and 64 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 74% of demand.
- **What do buyers complain about in rs232 usb adapter?**
- Top complaints mined from reviews: Konnektivität – insgesamt, Kompatibilität – insgesamt, Funktionalität insgesamt. The return rate is 2.0%.
- **When does demand for rs232 usb adapter peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the rs232 usb adapter niche?**
- Listings span €4.83–€16.68; the average listing price is €10.58 (sweet spot $15–$100). The average incumbent carries 1,508 reviews — the moat a new listing must climb.
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