Best Mini USB Serial Adapters of 2026

Kenneth Collin Avatar
Kenneth Collin
Last Updated: 4 Feb 2026

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Mini USB Serial Adapters are small devices that allow you to connect a serial device to your computer or laptop through a USB port. These adapters are compact and portable, making them ideal for use on-the-go or in tight spaces. They are compatible with a wide range of devices, including printers, scanners, and other peripherals that use a serial connection. With their plug-and-play functionality, they are easy to set up and use without the need for any additional software or drivers. These adapters are a convenient and cost-effective solution for anyone looking to connect older devices to their modern computer or laptop.

At a Glance: Our Top Picks

DUBEUYEW FT232RL USB to TTL Converter Module Cover #TOP 1
DUBEUYEW FT232RL USB to TTL Converter Module
ftb score rating icon 9.8
AZDelivery FT232RL Mini USB to TTL Serial Converter Cover #TOP 2
AZDelivery FT232RL Mini USB to TTL Serial Converter
ftb score rating icon 9.7
DUTTY FT232RL Mini USB to TTL Adapter Cover #TOP 3
DUTTY FT232RL Mini USB to TTL Adapter
ftb score rating icon 9.5

Top 6 Mini USB Serial Adapters

#TOP 1

DUBEUYEW FT232RL USB to TTL Converter Module

FT232RL
DUBEUYEW FT232RL USB to TTL Converter Module Cover
DUBEUYEW 3.3V 5V FT232RL FTDI Mini USB to TTL Serial Converter Adapter Module for Arduino Mini Port(4pcs)

The DUBEUYEW FT232RL Adapter is a versatile tool for connecting devices to your computer. It features a clear pins definition, making it easy for you to identify connections such as DTR and GND. The built-in USB power over current protection ensures your devices are safe from excess power, which is crucial for maintaining their longevity. With support for both 3.3V and 5V, this adapter is compatible with a variety of projects. Additionally, it includes RXD/TXD communication indicators, helping you troubleshoot connections efficiently.

What We Like
Clear pins definition
Over current protection
Supports 3.3V and 5V
Includes communication indicators
#TOP 2

AZDelivery FT232RL Mini USB to TTL Serial Converter

AZDELFT232RL
1x FT232RL Adapter
AZDelivery FT232RL Mini USB to TTL Serial Converter Cover
AZDelivery FT232RL Mini USB to TTL Serial Converter Adapter Module 3.3V 5.5V FT232R Port DTR RX TX VCC CTS GND Pin compatible with Arduino and Raspberry Pi including E-Book!

The AZDelivery USB Serial Adapter is a highly versatile tool for your projects. It is user-friendly, as no additional drivers are needed, allowing you to connect it seamlessly to your system. The logic level can be easily adjusted using jumpers on the board, giving you flexibility for various applications. Furthermore, it is compatible with Linux, making it suitable for a wider range of users. Additionally, the included E-Book provides essential guidance, helping you to set up quickly and efficiently.

What We Like
Easy plug-and-play setup
Adjustable logic level
Linux compatible
Includes helpful E-Book
Widely used and trusted
#TOP 3

DUTTY FT232RL Mini USB to TTL Adapter

Small
DUTTY FT232RL Mini USB to TTL Adapter Cover
DUTTY FT232RL FTDI Mini USB to TTL Serial Converter Adapter Module 3.3V 5.5V FT232R Breakout FT232RL USB to Serial Mini USB to TTL Adapter Board for Arduino

The DUTTY FT232RL Adapter is a versatile tool that enhances your connectivity options. It features the FT232RL chipset, allowing for seamless communication between devices at both 3.3V and 5.5V. The RXD/TXD transceiver communication indicator ensures you are always aware of the data transmission status, providing peace of mind during operations. Additionally, the built-in 500MA self-restore fuse protects your devices from potential damage, making this adapter a reliable choice for your projects. You will appreciate the straightforward pin definition for easy connections.

What We Like
Versatile voltage support
Communication indicators included
Built-in self-restore fuse
Easy pin definition
#TOP 4

Hailege FT232RL USB to TTL Serial Adapter

H-1-0661
Hailege FT232RL USB to TTL Serial Adapter Cover
Hailege 2pcs FT232RL FTDI Mini USB to TTL Serial Converter Adapter Module 3.3V 5.5V FT232R Breakout FT232RL USB to Serial Mini USB to TTL Adapter Board for

The Hailege FT232RL Adapter is a versatile tool for connecting devices through USB to TTL serial communication. It features the FT232RL chipset, which operates at both 3.3V and 5.5V, providing flexibility for various applications. The RXD/TXD transceiver communication indicator allows you to monitor data transmission easily, ensuring reliable connections. Additionally, the self-restore fuse rated at 500MA enhances safety by preventing overloads, giving you peace of mind while you work on your projects.

What We Like
Dual voltage operation
RXD/TXD communication indicator
500MA self-restore fuse
Supports multiple Windows versions
Simple pin definition
#TOP 5

Dealikee FT232RL Mini USB to TTL Adapter

5598506
Dealikee FT232RL Mini USB to TTL Adapter Cover
Dealikee 5 Pack FT232RL Mini USB to TTL Serial Converter Adapter 3.3V 5.5V FT232R Breakout Module Mini Port Adapter Board for Arduino

The Dealikee FT232RL Adapter is an efficient solution for serial communication. Featuring the FT232RL chipset, it operates at both 3.3V and 5.5V, making it versatile for various applications. The RXD/TXD transceiver communication indicator ensures you can easily monitor data transmission. Additionally, with a 500MA self-restore fuse, you gain peace of mind regarding circuit protection. This adapter is also compatible with Linux operating systems, allowing you to use it without the hassle of additional drivers.

What We Like
Versatile voltage options
Easy monitoring of communication
Built-in circuit protection
No driver installation needed
Linux compatibility
#TOP 6

GEARMO Hi-Speed USB Serial Adapter with FTDI Chip

SERIAL-B
Gray
GEARMO Hi-Speed USB Serial Adapter with FTDI Chip Cover
GEARMO Mini USB Serial Adapter Hi-Speed 920K FTDI Chip

The GEARMO USB Serial Adapter offers a reliable connection for your PC or Mac, featuring a high-speed capability of 300bps to 1Mbps. You can easily monitor your device's status with the indication LEDs for power, TX, and RX. It also supports the Cisco Break Sequence, making it ideal for networking tasks. Additionally, built-in static and surge protection ensures your device remains safe from electrical damage, giving you peace of mind while you work.

What We Like
High-speed data transfer
LED indicators for status
Static and surge protection
Cisco Break Sequence support
Wide OS compatibility
Buying Guide Image
Editor's Notes

During our mini usb serial adapter research, we found 44 mini usb serial adapter products and shortlisted 6 quality products. We collected and analyzed 18,670 customer reviews through our big data system to write the mini usb serial adapters list. We found that most customers choose mini usb serial adapters with an average price of £10.81.

The mini usb serial adapters are available for purchase. We have researched hundreds of brands and picked the top brands of mini usb serial adapters, including DUBEUYEW, AZDelivery, DUTTY, Hailege, Dealikee.

Written by
Kenneth Collin Avatar

Kenneth Collin graduated from Imperial College, London, at 22. He is a UX/UI designer, a web developer, and a writer, amongst others. At age 14, Kenneth programmed his first app. Kenneth's app served as a remote control for censored devices. "When I was 8, I would pick up scraps from electronics and try to rebuild or at least fix them," Kenneth said in one of his recent articles on Home repairs for top gadgets.