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.

rs232 usb adapter

Skip it

Soft demand (-25.5% this quarter) — this niche doesn't clear our bar today.

Conversion

Great11.8%

search→purchase rate — share of searches ending in a sale

Returns

Great2.0%

return rate — above 5% kills the launch gate

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Brand share

Good74%

top-5 brand share — brands hold most of the demand

Review moat

Okay1,508

avg incumbent reviews — the moat a new listing must climb

Avg price

Okay€10.58

avg listing price — sweet spot $15–$100

Competition

Okay64%

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

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

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.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top rs232 usb adapter search terms

rs232 usb adapter14K/yr -20.8%8.5% conv.
usb seriell adapter9K/yr -36.1%7.6% conv.
usb rs232 adapter5K/yr -7.3%7.7% conv.
rs2326K/yr -28.4%1.1% conv.
usb rs2324K/yr -16.7%7.2% conv.
rs232 usb3K/yr -27.4%6.8% conv.
seriell auf usb2K/yr -59.7%14.4% conv.

All 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.

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

UGREEN USB auf RS232 Seriell Kabel USB Seriell DB9 mit PL2303 Chipsatz Kompatibel mit Router (1M)

UGREEN€9.264.6★9,248 rev

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€10.904.6★1,904 rev

DIGITUS USB auf Seriell Adapter - RS232 Konverter - USB 2.0 Typ-A zu DSUB 9M - FTDI FT232RL Chipsatz - Inkl. 80 cm Kabel

DIGITUS€11.554.7★997 rev

LogiLink USB 2.0 (Typ-A) auf Seriell (RS232-9pin) Adapter für Win 11

Logilink€9.364.5★147 rev

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€12.304.3★639 rev

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€8.48154 rev

1y ago

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€12.1950 rev

1y ago

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€16.68165 rev

2y ago

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€13.7244 rev

3y ago

LogiLink USB 2.0 (Typ-A) auf Seriell (RS232-9pin) Adapter für Win 11

Logilink€9.36147 rev

4y ago

What buyers say about rs232 usb adapter

What buyers praise and complain about, mined from review topics.

What buyers love

beworben Vs Tatsächliches Produkt31%

“Macht seinen Job”

Kompatibilität – insgesamt15%

“Funktioniert unter Windows 11. Funktioniert unter Windows 11. Kabel ist land.”

Qualität insgesamt15%

“Gutes Produkt”

Konnektivität – insgesamt13%

“Com Port”

Funktionalität insgesamt7%

“funktionsfähig”

Akkulaufzeit4%

“Gut für Pylontech Batterien”

Software/Anwendung4%

“Wirklich Super ohne Probleme bei Windows 11”

Montage/Installation4%

“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-Verhältnis2%

“Preis Leistung stimmt”

Design insgesamt1%

“Die Verarbeitung wirkt solide”

What buyers complain about

Konnektivität – insgesamt43%

“Keine Verbindung”

Kompatibilität – insgesamt14%

“Für Industrie nicht geeignet”

Funktionalität insgesamt7%

“ok. retour gesendet Treiber Fehler beim Gerät”

Stärke7%

“Abdeckung nicht besonders stabil”

Defekt Material/Teile7%

“Treiber Fehler beim Gerät”

Qualität insgesamt7%

“Billiger Chip”

Top return reasons

Kompatibilität – insgesamt33%

Funktionalität insgesamt24%

Gesamtgröße19%

Konnektivität – insgesamt15%

Defekt Material/Teile2%

Buchse/Anschluss/Stecker2%

Software/Anwendung1%

Montage/Installation1%

Preis-Leistungs-Verhältnis1%

Qualität insgesamt1%

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.