---
title: "Usb to Ttl — $66K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/electronics/usb-to-ttl"
last_updated: "2026-08-11T04:39:06.150Z"
locale: en
meta:
description: "Niche score 45/100 · $66K/yr market · 70K searches/yr · $12.31 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $66K/yr market · 70K searches/yr · $12.31 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Usb to Ttl — $66K/yr Amazon US Niche (2026) - Flapen"
---
# **usb to ttl**
**Skip it**
A small market ($66K/yr) — this niche doesn't clear our bar today.
Market size 17Growth 23Conversion 77Competition 36Returns 89Price range 42Avg price 53Brand share 29Review moat 88Quality gap 53
**Returns**
**Great****1.3%**
return rate — above 5% kills the launch gate
**Review moat**
**Great****243.13**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Great****7.6%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
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**
**Okay****64%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****87%**
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 ~~](https://flapen.com/research/methodology)
## **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**
**12**
**Top-5 brand share**
**87%**
Top 20: 100%
**Top-5 click share**
**64%**
Top 20: 100%
**Open market**
**7%**
- 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.
2K1KSep '25Oct '25Dec '25Feb '26Mar '26May '26
[**Open Trend **](https://flapen.com/research/us/electronics/usb-to-ttl/trend)
## **Top usb to ttl search terms**
- **usb to ttl adapter**10K/yr+12.2%6.7% conv. - **usb to ttl**13K/yr-2.7%5.9% conv. - **usb to uart**11K/yr-1.3%5.5% conv. - **uart to usb**8K/yr-12.9%7.8% conv. - **uart**7K/yr+3.2%2.7% conv. - **usb to uart adapter**4K/yr-16.0%7.8% conv. - **usb ttl**4K/yr-20.3%7.8% conv. - **usb uart**3K/yr-3.6%9.8% conv. - **uart cable**3K/yr+1.1%2.1% conv. - **usb ttl adapter**4K/yr-20.3%9.9% conv. [**All search terms **](https://flapen.com/research/us/electronics/usb-to-ttl/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.
0%10%$7K20%$13K30%$20K40%$26K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**DSD TECH SH-U09C5 USB to TTL UART Converter Cable with FTDI Chip Support 5V 3.3V 2.5V 1.8V TTL**DSD TECH**$14.01**4.8★892 rev](https://www.amazon.com/dp/B07WX2DSVB) [2**HiLetgo CP2102 USB 2.0 to TTL Module Serial Converter Adapter Module USB to TTL Downloader with Jumper Wires**HiLetgo**$7.44**4.4★926 rev](https://www.amazon.com/dp/B00LODGRV8) [3**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**$9.98**4.5★82 rev](https://www.amazon.com/dp/B0FJRTL572) [4**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**$9.89**4.6★23 rev](https://www.amazon.com/dp/B0GWDS3VR2) [5**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**$13.56**4.4★211 rev](https://www.amazon.com/dp/B07R8BQYW1)
**~~View all top sellers →~~**
### **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**$9.89**23 rev3mo ago](https://www.amazon.com/dp/B0GWDS3VR2) [**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**$7.03**82 rev7mo ago](https://www.amazon.com/dp/B0G61569JG) [**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**$9.98**82 rev12mo ago](https://www.amazon.com/dp/B0FJRTL572) [**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**$20.81**19 rev1y ago](https://www.amazon.com/dp/B0DJP3K7RV) [**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**$15.25**14 rev1y ago](https://www.amazon.com/dp/B0D97VR3CY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**$9.89**4.6★**▲ 240%**](https://www.amazon.com/dp/B0GWDS3VR2) [**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**$9.98**4.5★**▲ 99%**](https://www.amazon.com/dp/B0FJRTL572) [**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**$20.81**5.0★**▲ 96%**](https://www.amazon.com/dp/B0DJP3K7RV) [**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**$7.03**4.5★**▲ 94%**](https://www.amazon.com/dp/B0G61569JG) [**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**$15.25**4.2★**▲ 21%**](https://www.amazon.com/dp/B0D97VR3CY)
**~~View all trending →~~**
## **What buyers say about usb to ttl**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Compatibility-Overall**20%
*“Perfectly compatible”*
**Connectivity-Overall**14%
*“I was able to connect”*
**Ease Of Use**12%
*“Easy to use”*
**Quality-Overall**10%
*“I'm giving it a full 5 stars based on its excellent out-of-the-box quality”*
**Socket/Port/Plug**9%
*“It's super easy as it's plug and play”*
**Value For Money**7%
*“its not very expensive”*
**Advertised Vs Actual Product**5%
*“Works just as described”*
**Assembly/Installation**5%
*“They are easy to find and install”*
**Functionality-Overall**3%
*“It didn't fail me”*
**Design-Overall**3%
*“Built well, versatile, no issues when using in a Win11 environment”*
### **What buyers complain about **
**Socket/Port/Plug**14%
*“Not 100% plug”*
**Compatibility-Overall**13%
*“This product did not work for me”*
**Value For Money**11%
*“This $15 cable costed me a $300”*
**Ease Of Use**7%
*“Not the easiest to use”*
**Data Transfer Speed**7%
*“The usual setting for communication with a host computer is 9600 baud, eight data bits, one stop bit, and no parity”*
**Quality-Overall**5%
*“I think that it is a little over priced so value is not the best for the quality”*
**Assembly/Installation**5%
*“void setup() {”*
**Connectivity-Overall**5%
*“I then disconnected the cable”*
**Durability**4%
*“I ripped it apart”*
**Software/Application**2%
*“the problem was with my software coding skills”*
### **Top return reasons **
**Compatibility-Overall**37%
**Connectivity-Overall**17%
**Functionality-Overall**15%
**Defective Material/Parts**8%
**Size-Overall**5%
**Socket/Port/Plug**4%
**Advertised Vs Actual Product**2%
**Value For Money**2%
**Software/Application**2%
**Heating**1%
## **Common questions**
- **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.
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