Is usb to ttl profitable to sell on Amazon United States?

The niche generates $66K/yr across 16 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -3.4%. Flapen's verdict: Skip it (45/100).

How competitive is the usb to ttl niche?

9 brands and 12 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 87% of demand.

What do buyers complain about in usb to ttl?

Top complaints mined from reviews: Socket/Port/Plug, Compatibility-Overall, Value For Money. The return rate is 1.3%.

What does it cost to enter the usb to ttl niche?

Listings span $7.03–$20.81; the average listing price is $12.31 (sweet spot $15–$100). The average incumbent carries 243 reviews — the moat a new listing must climb.

usb to ttl

Skip it

A small market ($66K/yr) — this niche doesn't clear our bar today.

Returns

Great1.3%

return rate — above 5% kills the launch gate

Review moat

Great243.13

avg incumbent reviews — the moat a new listing must climb

Conversion

Great7.6%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Avg price

Good$12.31

avg listing price — sweet spot $15–$100

Price range

Okay$7.03–$20.81

cheapest to priciest tracked listing — scored on the share inside $15–$100

Competition

Okay64%

top-5 click share — leaders hold, buyers still browse

Brand share

Okay87%

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

Growth

Bad-3.4%

90-day search growth — must beat 0% to launch

Market size

Bad$66K

$66K/yr · 70K searches

According to Flapen's Amazon United States niche tracking, usb to ttl is a $66K/yr Amazon United States market (70K searches/yr). The top 5 brands hold 87% of demand. Verdict: Skip it — 45/100.

Data updated Jul 21, 2026 · scored weekly · How we score niches

usb to ttl market data

Units sold / yr: 5K–6K; avg 100–250/product
Revenue / yr: $62K–$74K; units × avg price
Conversion rate: 7.6%
Avg BSR: #997
Page quality: 0%
Prime: 100%
Sponsored: 94%
Out of stock: 2.0%
Avg brand age: 50 months
Avg seller age: 196 days

Competition & brand share

The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.

Brands

9 falling

Sellers

Top-5 brand share

87%

Top 20: 100%

Top-5 click share

64%

Top 20: 100%

Open market

DSD TECH30%
HJHYUL23%
HiLetgo22%
DTECH7%
WWZMDiB5%
JESSINIE5%
Open — no brand owns it (3 brands, 7%)

Demand

Weekly Amazon search volume, last 45 weeks — -3.4% search growth over the last 90 days.

Open Trend

Top usb to ttl search terms

usb to ttl adapter10K/yr +12.2%6.7% conv.
usb to ttl13K/yr -2.7%5.9% conv.
usb to uart11K/yr -1.3%5.5% conv.
uart to usb8K/yr -12.9%7.8% conv.
uart7K/yr +3.2%2.7% conv.
usb to uart adapter4K/yr -16.0%7.8% conv.
usb ttl4K/yr -20.3%7.8% conv.
usb uart3K/yr -3.6%9.8% conv.
uart cable3K/yr +1.1%2.1% conv.
usb ttl adapter4K/yr -20.3%9.9% conv.

All search terms

Top usb to ttl 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 16 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

DSD TECH SH-U09C5 USB to TTL UART Converter Cable with FTDI Chip Support 5V 3.3V 2.5V 1.8V TTL

DSD TECH$14.014.8★892 rev

HiLetgo CP2102 USB 2.0 to TTL Module Serial Converter Adapter Module USB to TTL Downloader with Jumper Wires

HiLetgo$7.444.4★926 rev

HJHYUL CP2102 USB to TTL Serial Adapter USB 2.0 to 5Pin UART Converter Module with 3.3V/5V Output STC Compatible Includes Jumper Wires for Arduino ESP8266 STM32 DIY Projects (3-Pack)

HJHYUL$9.984.5★82 rev

HJHYUL CP2102 USB to TTL Serial Adapter Cable USB 2.0 to UART Converter 4 Pin (TXD RXD GND 5V) 3ft/95cm Long 3.3V TTL Signal for Arduino Raspberry Pi ESP8266 ESP32 (1pcs)

HJHYUL$9.894.6★23 rev

DTECH USB to TTL Serial 3.3V Adapter Cable TX RX Signal 4 Pin 0.1 inch Pitch Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (6ft Black)

DTECH$13.564.4★211 rev

Newest

by launch date

HJHYUL CP2102 USB to TTL Serial Adapter Cable USB 2.0 to UART Converter 4 Pin (TXD RXD GND 5V) 3ft/95cm Long 3.3V TTL Signal for Arduino Raspberry Pi ESP8266 ESP32 (1pcs)

HJHYUL$9.8923 rev

3mo ago

HJHYUL CP2102 USB to TTL Serial Adapter USB 2.0 to 5Pin UART Converter Module with 3.3V/5V Output STC Compatible Includes Jumper Wires for Arduino ESP8266 STM32 DIY Projects (1-Pack)

HJHYUL$7.0382 rev

7mo ago

HJHYUL CP2102 USB to TTL Serial Adapter USB 2.0 to 5Pin UART Converter Module with 3.3V/5V Output STC Compatible Includes Jumper Wires for Arduino ESP8266 STM32 DIY Projects (3-Pack)

HJHYUL$9.9882 rev

12mo ago

USB To UART/I2C/SPI/JTAG Converter Board with Aluminum Alloy Case Aceess to Control Various UART/ I2C/SPI/JTAG Devices via Computer Support Win7/8/8.1/10/11 Linux etc. Compatible with 3.3V and 5V

UeeKKoo$20.8119 rev

1y ago

DTECH 3ft USB to TTL Serial Cable 3.3V 3 Pin TX RX Signal UART Adapter Debug Cord Genuine FTDI FT232RL Chip Compatible with Windows 11 10 8 7 Linux MAC OS 3Pin 3v3 2.54mm Dupont Female Header

DTECH$15.2514 rev

1y ago

What buyers say about usb to ttl

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

What buyers love

Compatibility-Overall20%

“Perfectly compatible”

Connectivity-Overall14%

“I was able to connect”

Ease Of Use12%

“Easy to use”

Quality-Overall10%

“I'm giving it a full 5 stars based on its excellent out-of-the-box quality”

Socket/Port/Plug9%

“It's super easy as it's plug and play”

Value For Money7%

“its not very expensive”

Advertised Vs Actual Product5%

“Works just as described”

Assembly/Installation5%

“They are easy to find and install”

Functionality-Overall3%

“It didn't fail me”

Design-Overall3%

“Built well, versatile, no issues when using in a Win11 environment”

What buyers complain about

Socket/Port/Plug14%

“Not 100% plug”

Compatibility-Overall13%

“This product did not work for me”

Value For Money11%

“This $15 cable costed me a $300”

Ease Of Use7%

“Not the easiest to use”

Data Transfer Speed7%

“The usual setting for communication with a host computer is 9600 baud, eight data bits, one stop bit, and no parity”

Quality-Overall5%

“I think that it is a little over priced so value is not the best for the quality”

Assembly/Installation5%

“void setup() {”

Connectivity-Overall5%

“I then disconnected the cable”

Durability4%

“I ripped it apart”

Software/Application2%

“the problem was with my software coding skills”

Top return reasons

Compatibility-Overall37%

Connectivity-Overall17%

Functionality-Overall15%

Defective Material/Parts8%

Size-Overall5%

Socket/Port/Plug4%

Advertised Vs Actual Product2%

Value For Money2%